diff --git a/llvm/docs/CommandGuide/llvm-exegesis.rst b/llvm/docs/CommandGuide/llvm-exegesis.rst
--- a/llvm/docs/CommandGuide/llvm-exegesis.rst
+++ b/llvm/docs/CommandGuide/llvm-exegesis.rst
@@ -19,9 +19,10 @@
 generates a code snippet that makes execution as serial (resp. as parallel) as
 possible so that we can measure the latency (resp. inverse throughput/uop decomposition)
 of the instruction.
-The code snippet is jitted and executed on the host subtarget. The time taken
-(resp. resource usage) is measured using hardware performance counters. The
-result is printed out as YAML to the standard output.
+The code snippet is jitted and, unless requested not to, executed on the
+host subtarget. The time taken (resp. resource usage) is measured using
+hardware performance counters. The result is printed out as YAML
+to the standard output.
 
 The main goal of this tool is to automatically (in)validate the LLVM's TableDef
 scheduling models. To that end, we also provide analysis of the results.
@@ -195,6 +196,14 @@
  In `analysis` mode, you also need to specify at least one of the
  `-analysis-clusters-output-file=` and `-analysis-inconsistencies-output-file=`.
 
+.. option:: --dry-run
+
+  By default, when `-mode=` is specified, the generated snippet will be executed
+  and measured, and that requires that we are running on the hardware for which
+  the snippet was generated, and that supports performance measurements.
+  But sometimes, you just want to generate snippets, and this is exactly what
+  this options allows one to do.
+
 .. option:: -x86-lbr-sample-period=<nBranches/sample>
 
   Specify the LBR sampling period - how many branches before we take a sample.
diff --git a/llvm/test/tools/llvm-exegesis/AArch64/lit.local.cfg b/llvm/test/tools/llvm-exegesis/AArch64/lit.local.cfg
--- a/llvm/test/tools/llvm-exegesis/AArch64/lit.local.cfg
+++ b/llvm/test/tools/llvm-exegesis/AArch64/lit.local.cfg
@@ -1,7 +1,10 @@
 import subprocess
 import lit.util
 
-if not ('AArch64' in config.root.targets):
+if 'native' not in config.available_features:
+    config.unsupported = True
+
+elif not ('AArch64' in config.root.targets):
     # We need support for AArch64.
     config.unsupported = True
 
diff --git a/llvm/test/tools/llvm-exegesis/Mips/lit.local.cfg b/llvm/test/tools/llvm-exegesis/Mips/lit.local.cfg
--- a/llvm/test/tools/llvm-exegesis/Mips/lit.local.cfg
+++ b/llvm/test/tools/llvm-exegesis/Mips/lit.local.cfg
@@ -1,7 +1,10 @@
 import subprocess
 import lit.util
 
-if not ('Mips' in config.root.targets):
+if 'native' not in config.available_features:
+    config.unsupported = True
+
+elif not ('Mips' in config.root.targets):
     # We need support for Mips.
     config.unsupported = True
 
diff --git a/llvm/test/tools/llvm-exegesis/PowerPC/lit.local.cfg b/llvm/test/tools/llvm-exegesis/PowerPC/lit.local.cfg
--- a/llvm/test/tools/llvm-exegesis/PowerPC/lit.local.cfg
+++ b/llvm/test/tools/llvm-exegesis/PowerPC/lit.local.cfg
@@ -1,7 +1,10 @@
 import subprocess
 import lit.util
 
-if not ('PowerPC' in config.root.targets):
+if 'native' not in config.available_features:
+    config.unsupported = True
+
+elif not ('PowerPC' in config.root.targets):
     # We need support for PowerPC.
     config.unsupported = True
 
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-CMOV16rm-noreg-deserialization.test b/llvm/test/tools/llvm-exegesis/X86/analysis-CMOV16rm-noreg-deserialization.test
new file mode 100644
--- /dev/null
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-CMOV16rm-noreg-deserialization.test
@@ -0,0 +1,58 @@
+# RUN: llvm-exegesis -march=x86-64 -mcpu=znver3 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.1 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS %s
+
+# https://bugs.llvm.org/show_bug.cgi?id=41448
+# Verify that deserialization works. Since CMOV16rm has a variant sched class, just printing clusters is sufficient
+
+---
+mode:            uops
+key:
+  instructions:
+    - 'CMOV16rm AX AX RDI i_0x1 %noreg i_0x0 %noreg i_0x0'
+    - 'CMOV16rm BP BP RDI i_0x1 %noreg i_0x40 %noreg i_0x0'
+    - 'CMOV16rm BX BX RDI i_0x1 %noreg i_0x80 %noreg i_0x0'
+    - 'CMOV16rm CX CX RDI i_0x1 %noreg i_0xc0 %noreg i_0x0'
+    - 'CMOV16rm DX DX RDI i_0x1 %noreg i_0x100 %noreg i_0x0'
+    - 'CMOV16rm SI SI RDI i_0x1 %noreg i_0x140 %noreg i_0x0'
+    - 'CMOV16rm R8W R8W RDI i_0x1 %noreg i_0x180 %noreg i_0x0'
+    - 'CMOV16rm R9W R9W RDI i_0x1 %noreg i_0x1c0 %noreg i_0x0'
+    - 'CMOV16rm R10W R10W RDI i_0x1 %noreg i_0x200 %noreg i_0x0'
+    - 'CMOV16rm R11W R11W RDI i_0x1 %noreg i_0x240 %noreg i_0x0'
+    - 'CMOV16rm R12W R12W RDI i_0x1 %noreg i_0x280 %noreg i_0x0'
+    - 'CMOV16rm R13W R13W RDI i_0x1 %noreg i_0x2c0 %noreg i_0x0'
+    - 'CMOV16rm R14W R14W RDI i_0x1 %noreg i_0x300 %noreg i_0x0'
+    - 'CMOV16rm R15W R15W RDI i_0x1 %noreg i_0x340 %noreg i_0x0'
+  config:          ''
+  register_initial_values:
+    - 'AX=0x0'
+    - 'EFLAGS=0x0'
+    - 'BP=0x0'
+    - 'BX=0x0'
+    - 'CX=0x0'
+    - 'DX=0x0'
+    - 'SI=0x0'
+    - 'R8W=0x0'
+    - 'R9W=0x0'
+    - 'R10W=0x0'
+    - 'R11W=0x0'
+    - 'R12W=0x0'
+    - 'R13W=0x0'
+    - 'R14W=0x0'
+    - 'R15W=0x0'
+cpu_name:        znver3
+llvm_triple:     x86_64-pc-linux-gnu
+num_repetitions: 10000
+measurements:
+  - { key: Zn3Int, value: 1.0161, per_snippet_value: 14.2254 }
+  - { key: Zn3FPU, value: 0, per_snippet_value: 0 }
+  - { key: Zn3Load, value: 1.003, per_snippet_value: 14.042 }
+  - { key: Zn3Store, value: 0.0023, per_snippet_value: 0.0322 }
+  - { key: Zn3Divider, value: 0, per_snippet_value: 0 }
+  - { key: NumMicroOps, value: 1.0146, per_snippet_value: 14.2044 }
+error:           ''
+info:            instruction has tied variables, using static renaming.
+assembled_snippet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
+...
+
+
+# CHECK-CLUSTERS: {{^}}cluster_id,opcode_name,config,sched_class,
+# CHECK-CLUSTERS-NEXT: {{^}}0,
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-cluster-stabilization-config.test b/llvm/test/tools/llvm-exegesis/X86/analysis-cluster-stabilization-config.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-cluster-stabilization-config.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-cluster-stabilization-config.test
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-UNSTABLE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-UNSTABLE %s
 
 # We have two measurements with different measurements for SQRTSSr, but they
 # have different configs, so they should not be placed in the same cluster by
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-cluster-stabilization.test b/llvm/test/tools/llvm-exegesis/X86/analysis-cluster-stabilization.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-cluster-stabilization.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-cluster-stabilization.test
@@ -1,6 +1,6 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.1 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-STABLE %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-UNSTABLE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.1 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-STABLE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-UNSTABLE %s
 
 # We have one ADD32rr measurement, and two measurements for SQRTSSr.
 # The ADD32rr measurement and one of the SQRTSSr measurements are identical,
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-clustering-algorithms.test b/llvm/test/tools/llvm-exegesis/X86/analysis-clustering-algorithms.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-clustering-algorithms.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-clustering-algorithms.test
@@ -1,7 +1,7 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=dbscan | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-DBSCAN-05 %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.49 -analysis-numpoints=1 -analysis-clustering=dbscan | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-DBSCAN-049 %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-NAIVE %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.49 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-NAIVE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=dbscan | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-DBSCAN-05 %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.49 -analysis-numpoints=1 -analysis-clustering=dbscan | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-DBSCAN-049 %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-NAIVE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.49 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-NAIVE %s
 
 # CHECK-CLUSTERS-ALL: {{^}}cluster_id,opcode_name,config,sched_class,inverse_throughput{{$}}
 
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-epsilons.test b/llvm/test/tools/llvm-exegesis/X86/analysis-epsilons.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-epsilons.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-epsilons.test
@@ -1,12 +1,12 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=9 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-TWO %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=9 -analysis-inconsistency-epsilon=100 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-TWO %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-ONE %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-inconsistency-epsilon=100 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-ONE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=9 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-TWO %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=9 -analysis-inconsistency-epsilon=100 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-TWO %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-ONE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-inconsistency-epsilon=100 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-ONE %s
 
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=9 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-FAIL %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=10 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-FAIL %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=9 -analysis-inconsistency-epsilon=100 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-PASS %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=10 -analysis-inconsistency-epsilon=100 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-PASS %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=9 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-FAIL %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=10 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-FAIL %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=9 -analysis-inconsistency-epsilon=100 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-PASS %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=10 -analysis-inconsistency-epsilon=100 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-PASS %s
 
 # CHECK-CLUSTERS-ALL: {{^}}cluster_id,opcode_name,config,sched_class,latency{{$}}
 
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-inconsistencies-uops-backwards.test b/llvm/test/tools/llvm-exegesis/X86/analysis-inconsistencies-uops-backwards.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-inconsistencies-uops-backwards.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-inconsistencies-uops-backwards.test
@@ -1,5 +1,5 @@
 # This tests backwards-compatibility of the yaml schema (see PR39082).
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clusters-output-file="" -analysis-numpoints=1 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clusters-output-file="" -analysis-numpoints=1 | FileCheck %s
 
 # CHECK: DOCTYPE
 
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-inconsistencies-uops.test b/llvm/test/tools/llvm-exegesis/X86/analysis-inconsistencies-uops.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-inconsistencies-uops.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-inconsistencies-uops.test
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clusters-output-file="" -analysis-numpoints=1 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clusters-output-file="" -analysis-numpoints=1 | FileCheck %s
 
 # CHECK: DOCTYPE
 
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-naive-cluster-stabilization.test b/llvm/test/tools/llvm-exegesis/X86/analysis-naive-cluster-stabilization.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-naive-cluster-stabilization.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-naive-cluster-stabilization.test
@@ -1,10 +1,10 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-STABLE-05 %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-UNSTABLE-05 %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-STABLE-05 %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-UNSTABLE-05 %s
 
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.49 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.49 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-STABLE-049 %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.49 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-UNSTABLE-049 %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.49 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.49 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-STABLE-049 %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.49 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-UNSTABLE-049 %s
 
 # CHECK-CLUSTERS-ALL: {{^}}cluster_id,opcode_name,config,sched_class,latency{{$}}
 
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-naive-clusterization-same-opcode-different-sched-class.test b/llvm/test/tools/llvm-exegesis/X86/analysis-naive-clusterization-same-opcode-different-sched-class.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-naive-clusterization-same-opcode-different-sched-class.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-naive-clusterization-same-opcode-different-sched-class.test
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mcpu=znver3 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.1 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS %s
+# RUN: llvm-exegesis -march=x86-64 -mcpu=znver3 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.1 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS %s
 
 # Naive clusterization mainly groups by instruction opcode,
 # but it should also partition the benchmarks of the same opcode
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-naive-clusterization.test b/llvm/test/tools/llvm-exegesis/X86/analysis-naive-clusterization.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-naive-clusterization.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-naive-clusterization.test
@@ -1,6 +1,6 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.1 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-STABLE %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-UNSTABLE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.1 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-STABLE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clustering-epsilon=0.5 -analysis-inconsistency-epsilon=0.5 -analysis-display-unstable-clusters -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-INCONSISTENCIES-UNSTABLE %s
 
 # We have two ADD32rr measurements, and two measurements for SQRTSSr.
 # ADD32rr measurements are neighbours.
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-noise.test b/llvm/test/tools/llvm-exegesis/X86/analysis-noise.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-noise.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-noise.test
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clusters-output-file="" -analysis-numpoints=3 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-inconsistencies-output-file=- -analysis-clusters-output-file="" -analysis-numpoints=3 | FileCheck %s
 
 # CHECK: DOCTYPE
 # CHECK: [noise] Cluster (1 points)
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-same-cluster-for-ops-in-different-sched-clusters.test b/llvm/test/tools/llvm-exegesis/X86/analysis-same-cluster-for-ops-in-different-sched-clusters.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-same-cluster-for-ops-in-different-sched-clusters.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-same-cluster-for-ops-in-different-sched-clusters.test
@@ -1,6 +1,6 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-DBSCAN %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-numpoints=1 -analysis-clustering=dbscan | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-DBSCAN %s
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-NAIVE %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-numpoints=1 | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-DBSCAN %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-numpoints=1 -analysis-clustering=dbscan | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-DBSCAN %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-clustering-epsilon=10 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS-ALL,CHECK-CLUSTERS-NAIVE %s
 
 # Normally BSR32rr is in WriteBSR and BSF32rr is in WriteBSF sched classes.
 # Here we check that if we have dbscan-clustered these two measurements into the
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-uops-backwards.test b/llvm/test/tools/llvm-exegesis/X86/analysis-uops-backwards.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-uops-backwards.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-uops-backwards.test
@@ -1,5 +1,5 @@
 # This tests backwards-compatibility of the yaml schema (see PR39082).
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-numpoints=1 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-numpoints=1 | FileCheck %s
 
 # CHECK: cluster_id,opcode_name,config,sched_class,HWPort0,HWPort1,HWPort2,HWPort3,HWPort4,HWPort5,HWPort6,HWPort7,NumMicroOps
 # CHECK-NEXT: vzeroall
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-uops-variant.test b/llvm/test/tools/llvm-exegesis/X86/analysis-uops-variant.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-uops-variant.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-uops-variant.test
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-numpoints=1 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mcpu=sandybridge -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-numpoints=1 | FileCheck %s
 
 # REQUIRES: asserts
 # (sched class name is NDEBUG only)
diff --git a/llvm/test/tools/llvm-exegesis/X86/analysis-uops.test b/llvm/test/tools/llvm-exegesis/X86/analysis-uops.test
--- a/llvm/test/tools/llvm-exegesis/X86/analysis-uops.test
+++ b/llvm/test/tools/llvm-exegesis/X86/analysis-uops.test
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-numpoints=1 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=analysis -benchmarks-file=%s -analysis-clusters-output-file=- -analysis-numpoints=1 | FileCheck %s
 
 # CHECK: cluster_id,opcode_name,config,sched_class,HWPort0,HWPort1,HWPort2,HWPort3,HWPort4,HWPort5,HWPort6,HWPort7,NumMicroOps
 # CHECK-NEXT: vzeroall
diff --git a/llvm/test/tools/llvm-exegesis/X86/inverse_throughput/inverse_throughput-by-opcode-name.s b/llvm/test/tools/llvm-exegesis/X86/inverse_throughput/inverse_throughput-by-opcode-name.s
--- a/llvm/test/tools/llvm-exegesis/X86/inverse_throughput/inverse_throughput-by-opcode-name.s
+++ b/llvm/test/tools/llvm-exegesis/X86/inverse_throughput/inverse_throughput-by-opcode-name.s
@@ -1,9 +1,8 @@
-# RUN: llvm-exegesis -mode=inverse_throughput -opcode-name=ADD32rr -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=inverse_throughput -opcode-name=ADD32rr -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=inverse_throughput --dry-run -opcode-name=ADD32rr -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=inverse_throughput --dry-run -opcode-name=ADD32rr -repetition-mode=loop | FileCheck %s
 
 CHECK:      ---
 CHECK-NEXT: mode: inverse_throughput
 CHECK-NEXT: key:
 CHECK-NEXT:   instructions:
 CHECK-NEXT:     ADD32rr
-CHECK: key: inverse_throughput
diff --git a/llvm/test/tools/llvm-exegesis/X86/inverse_throughput/lit.local.cfg b/llvm/test/tools/llvm-exegesis/X86/inverse_throughput/lit.local.cfg
deleted file mode 100644
--- a/llvm/test/tools/llvm-exegesis/X86/inverse_throughput/lit.local.cfg
+++ /dev/null
@@ -1,29 +0,0 @@
-import subprocess
-import lit.util
-
-if not ('X86' in config.root.targets):
-    # We need support for X86.
-    config.unsupported = True
-
-elif not ('x86_64' in config.root.host_triple):
-    # We need to be running on an X86 host.
-    config.unsupported = True
-
-else:
-    # We need libpfm to be installed and allow reading perf counters. We can
-    # only know that at runtime, so we try to measure the latency of an empty
-    # code snippet and bail out on error.
-    llvm_exegesis_exe = lit.util.which('llvm-exegesis', config.llvm_tools_dir)
-    if not llvm_exegesis_exe:
-        print('llvm-exegesis not found')
-        config.unsupported = True
-    else:
-      try:
-          with open(os.devnull, 'w') as quiet:
-              check_llvm_exegesis_inverse_throughput_result = subprocess.call(
-                [llvm_exegesis_exe, '-mode', 'inverse_throughput', '-snippets-file', '/dev/null'], stdout=quiet, stderr=quiet)
-      except OSError:
-          print('could not exec llvm-exegesis')
-          config.unsupported = True
-      if not check_llvm_exegesis_inverse_throughput_result == 0:
-        config.unsupported = True
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/latency-CMOV32rr.s b/llvm/test/tools/llvm-exegesis/X86/latency/latency-CMOV32rr.s
--- a/llvm/test/tools/llvm-exegesis/X86/latency/latency-CMOV32rr.s
+++ b/llvm/test/tools/llvm-exegesis/X86/latency/latency-CMOV32rr.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=latency -opcode-name=CMOV32rr -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=latency -opcode-name=CMOV32rr -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=CMOV32rr -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=CMOV32rr -repetition-mode=loop | FileCheck %s
 
 CHECK:      ---
 CHECK-NEXT: mode: latency
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/latency-IN16rr.s b/llvm/test/tools/llvm-exegesis/X86/latency/latency-IN16rr.s
--- a/llvm/test/tools/llvm-exegesis/X86/latency/latency-IN16rr.s
+++ b/llvm/test/tools/llvm-exegesis/X86/latency/latency-IN16rr.s
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=latency -opcode-name=IN16rr -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=IN16rr -repetition-mode=duplicate | FileCheck %s
 
 # FIXME: Sometimes fails with: 'unimplemented operand type'
 # ALLOW_RETRIES: 2
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/latency-LEA64_32r.s b/llvm/test/tools/llvm-exegesis/X86/latency/latency-LEA64_32r.s
--- a/llvm/test/tools/llvm-exegesis/X86/latency/latency-LEA64_32r.s
+++ b/llvm/test/tools/llvm-exegesis/X86/latency/latency-LEA64_32r.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=latency -opcode-name=LEA64_32r -repetition-mode=duplicate -max-configs-per-opcode=2 | FileCheck %s
-# RUN: llvm-exegesis -mode=latency -opcode-name=LEA64_32r -repetition-mode=loop -max-configs-per-opcode=2 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=LEA64_32r -repetition-mode=duplicate -max-configs-per-opcode=2 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=LEA64_32r -repetition-mode=loop -max-configs-per-opcode=2 | FileCheck %s
 
 CHECK:      ---
 CHECK-NEXT: mode: latency
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/latency-LEA64r.s b/llvm/test/tools/llvm-exegesis/X86/latency/latency-LEA64r.s
--- a/llvm/test/tools/llvm-exegesis/X86/latency/latency-LEA64r.s
+++ b/llvm/test/tools/llvm-exegesis/X86/latency/latency-LEA64r.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=latency -opcode-name=LEA64r -repetition-mode=duplicate -max-configs-per-opcode=2 | FileCheck %s
-# RUN: llvm-exegesis -mode=latency -opcode-name=LEA64r -repetition-mode=loop -max-configs-per-opcode=2 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=LEA64r -repetition-mode=duplicate -max-configs-per-opcode=2 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=LEA64r -repetition-mode=loop -max-configs-per-opcode=2 | FileCheck %s
 
 CHECK:      ---
 CHECK-NEXT: mode: latency
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/latency-SBB8rr.s b/llvm/test/tools/llvm-exegesis/X86/latency/latency-SBB8rr.s
--- a/llvm/test/tools/llvm-exegesis/X86/latency/latency-SBB8rr.s
+++ b/llvm/test/tools/llvm-exegesis/X86/latency/latency-SBB8rr.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=latency -opcode-name=SBB8rr -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=latency -opcode-name=SBB8rr -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=SBB8rr -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=SBB8rr -repetition-mode=loop | FileCheck %s
 
 CHECK:      ---
 CHECK-NEXT: mode: latency
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/latency-SETCCr-cond-codes-sweep.s b/llvm/test/tools/llvm-exegesis/X86/latency/latency-SETCCr-cond-codes-sweep.s
--- a/llvm/test/tools/llvm-exegesis/X86/latency/latency-SETCCr-cond-codes-sweep.s
+++ b/llvm/test/tools/llvm-exegesis/X86/latency/latency-SETCCr-cond-codes-sweep.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=latency -opcode-name=SETCCr --max-configs-per-opcode=1 | FileCheck %s --check-prefix=CHECK
-# RUN: llvm-exegesis -mode=latency -opcode-name=SETCCr --max-configs-per-opcode=256 | FileCheck %s --check-prefix=SWEEP
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=SETCCr --max-configs-per-opcode=1 | FileCheck %s --check-prefix=CHECK
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=SETCCr --max-configs-per-opcode=256 | FileCheck %s --check-prefix=SWEEP
 
 CHECK:      ---
 CHECK-NEXT: mode: latency
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/latency-SQRTSSr.s b/llvm/test/tools/llvm-exegesis/X86/latency/latency-SQRTSSr.s
--- a/llvm/test/tools/llvm-exegesis/X86/latency/latency-SQRTSSr.s
+++ b/llvm/test/tools/llvm-exegesis/X86/latency/latency-SQRTSSr.s
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=latency -opcode-name=SQRTSSr -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=SQRTSSr -repetition-mode=loop | FileCheck %s
 
 # Check that the setup code for MXCSR does not crash the snippet.
 
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/latency-by-opcode-name.s b/llvm/test/tools/llvm-exegesis/X86/latency/latency-by-opcode-name.s
--- a/llvm/test/tools/llvm-exegesis/X86/latency/latency-by-opcode-name.s
+++ b/llvm/test/tools/llvm-exegesis/X86/latency/latency-by-opcode-name.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=latency -opcode-name=ADD32rr -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=latency -opcode-name=ADD32rr -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=ADD32rr -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=ADD32rr -repetition-mode=loop | FileCheck %s
 
 CHECK:      ---
 CHECK-NEXT: mode: latency
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/lit.local.cfg b/llvm/test/tools/llvm-exegesis/X86/latency/lit.local.cfg
deleted file mode 100644
--- a/llvm/test/tools/llvm-exegesis/X86/latency/lit.local.cfg
+++ /dev/null
@@ -1,29 +0,0 @@
-import subprocess
-import lit.util
-
-if not ('X86' in config.root.targets):
-    # We need support for X86.
-    config.unsupported = True
-
-elif not ('x86_64' in config.root.host_triple):
-    # We need to be running on an X86 host.
-    config.unsupported = True
-
-else:
-    # We need libpfm to be installed and allow reading perf counters. We can
-    # only know that at runtime, so we try to measure the latency of an empty
-    # code snippet and bail out on error.
-    llvm_exegesis_exe = lit.util.which('llvm-exegesis', config.llvm_tools_dir)
-    if not llvm_exegesis_exe:
-        print('llvm-exegesis not found')
-        config.unsupported = True
-    else:
-      try:
-          with open(os.devnull, 'w') as quiet:
-              check_llvm_exegesis_latency_result = subprocess.call(
-                [llvm_exegesis_exe, '-mode', 'latency', '-snippets-file', '/dev/null'], stdout=quiet, stderr=quiet)
-      except OSError:
-          print('could not exec llvm-exegesis')
-          config.unsupported = True
-      if not check_llvm_exegesis_latency_result == 0:
-        config.unsupported = True
diff --git a/llvm/test/tools/llvm-exegesis/X86/latency/max-configs.test b/llvm/test/tools/llvm-exegesis/X86/latency/max-configs.test
--- a/llvm/test/tools/llvm-exegesis/X86/latency/max-configs.test
+++ b/llvm/test/tools/llvm-exegesis/X86/latency/max-configs.test
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=latency -opcode-name=SBB8rr -max-configs-per-opcode=1 | FileCheck -check-prefixes=CHECK,CHECK1 %s
-# RUN: llvm-exegesis -mode=latency -opcode-name=SBB8rr -max-configs-per-opcode=2 | FileCheck -check-prefixes=CHECK,CHECK2 %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=SBB8rr -max-configs-per-opcode=1 | FileCheck -check-prefixes=CHECK,CHECK1 %s
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --dry-run -opcode-name=SBB8rr -max-configs-per-opcode=2 | FileCheck -check-prefixes=CHECK,CHECK2 %s
 
 CHECK:      ---
 CHECK-NEXT: mode: latency
diff --git a/llvm/test/tools/llvm-exegesis/X86/lbr/Inputs/mov_add.att b/llvm/test/tools/llvm-exegesis/X86/lbr/Inputs/mov_add.att
--- a/llvm/test/tools/llvm-exegesis/X86/lbr/Inputs/mov_add.att
+++ b/llvm/test/tools/llvm-exegesis/X86/lbr/Inputs/mov_add.att
@@ -1,4 +1,4 @@
-# LLVM-EXEGESIS-LIVEIN RDI
-# LLVM-EXEGESIS-DEFREG XMM1 42
+# llvm-exegesis -march=x86-64-LIVEIN RDI
+# llvm-exegesis -march=x86-64-DEFREG XMM1 42
 movq $2, %rdi
-addq $0x10, %rdi
\ No newline at end of file
+addq $0x10, %rdi
diff --git a/llvm/test/tools/llvm-exegesis/X86/lbr/lit.local.cfg b/llvm/test/tools/llvm-exegesis/X86/lbr/lit.local.cfg
--- a/llvm/test/tools/llvm-exegesis/X86/lbr/lit.local.cfg
+++ b/llvm/test/tools/llvm-exegesis/X86/lbr/lit.local.cfg
@@ -1,15 +1,18 @@
 import subprocess
 import lit.util
 
-if not ('X86' in config.root.targets):
+if 'native' not in config.available_features:
+    config.unsupported = True
+
+elif not ('X86' in config.root.targets):
     # We need support for X86.
     config.unsupported = True
 
 elif not ('x86_64' in config.root.host_triple):
     # We need to be running on an X86 host.
     config.unsupported = True
-    
-else:    
+
+else:
     # We need libpfm to be installed and the host to be support LBR format with cycles.
     llvm_exegesis_exe = lit.util.which('llvm-exegesis', config.llvm_tools_dir)
     if not llvm_exegesis_exe:
diff --git a/llvm/test/tools/llvm-exegesis/X86/lbr/mov-add.s b/llvm/test/tools/llvm-exegesis/X86/lbr/mov-add.s
--- a/llvm/test/tools/llvm-exegesis/X86/lbr/mov-add.s
+++ b/llvm/test/tools/llvm-exegesis/X86/lbr/mov-add.s
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=latency --repetition-mode=loop --x86-lbr-sample-period=521 --snippets-file=%p/Inputs/mov_add.att
+# RUN: llvm-exegesis -march=x86-64 -mode=latency --repetition-mode=loop --x86-lbr-sample-period=521 --snippets-file=%p/Inputs/mov_add.att
 
 
 CHECK:      ---
diff --git a/llvm/test/tools/llvm-exegesis/X86/lit.local.cfg b/llvm/test/tools/llvm-exegesis/X86/lit.local.cfg
--- a/llvm/test/tools/llvm-exegesis/X86/lit.local.cfg
+++ b/llvm/test/tools/llvm-exegesis/X86/lit.local.cfg
@@ -1,7 +1,3 @@
 if not ('X86' in config.root.targets):
     # We need support for X86.
     config.unsupported = True
-
-elif not ('x86_64' in config.root.host_triple):
-    # We need to be running on an X86 host.
-    config.unsupported = True
\ No newline at end of file
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/lit.local.cfg b/llvm/test/tools/llvm-exegesis/X86/uops/lit.local.cfg
deleted file mode 100644
--- a/llvm/test/tools/llvm-exegesis/X86/uops/lit.local.cfg
+++ /dev/null
@@ -1,29 +0,0 @@
-import subprocess
-import lit.util
-
-if not ('X86' in config.root.targets):
-    # We need support for X86.
-    config.unsupported = True
-
-elif not ('x86_64' in config.root.host_triple):
-    # We need to be running on an X86 host.
-    config.unsupported = True
-
-else:
-    # We need libpfm to be installed and allow reading perf counters. We can
-    # only know that at runtime, so we try to measure the latency of an empty
-    # code snippet and bail out on error.
-    llvm_exegesis_exe = lit.util.which('llvm-exegesis', config.llvm_tools_dir)
-    if not llvm_exegesis_exe:
-        print('llvm-exegesis not found')
-        config.unsupported = True
-    else:
-      try:
-          with open(os.devnull, 'w') as quiet:
-              check_llvm_exegesis_uops_result = subprocess.call(
-                [llvm_exegesis_exe, '-mode', 'uops', '-snippets-file', '/dev/null'], stdout=quiet, stderr=quiet)
-      except OSError:
-          print('could not exec llvm-exegesis')
-          config.unsupported = True
-      if not check_llvm_exegesis_uops_result == 0:
-        config.unsupported = True
\ No newline at end of file
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32mi8.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32mi8.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32mi8.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32mi8.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD32mi8 -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD32mi8 -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD32mi8 -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD32mi8 -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32mr.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32mr.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32mr.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32mr.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD32mr -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD32mr -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD32mr -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD32mr -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32rm.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32rm.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32rm.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD32rm.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD32rm -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD32rm -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD32rm -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD32rm -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD_F32m.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD_F32m.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD_F32m.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-ADD_F32m.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD_F32m -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD_F32m -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD_F32m -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD_F32m -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-BEXTR32rm.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-BEXTR32rm.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-BEXTR32rm.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-BEXTR32rm.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=BEXTR32rm -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=BEXTR32rm -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=BEXTR32rm -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=BEXTR32rm -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-BSF16rm.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-BSF16rm.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-BSF16rm.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-BSF16rm.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=BSF16rm -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=BSF16rm -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=BSF16rm -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=BSF16rm -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-BTR64mr.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-BTR64mr.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-BTR64mr.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-BTR64mr.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=BTR64mr -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=BTR64mr -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=BTR64mr -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=BTR64mr -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-CMOV16rm-noreg-serialization.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-CMOV16rm-noreg-serialization.s
new file mode 100644
--- /dev/null
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-CMOV16rm-noreg-serialization.s
@@ -0,0 +1,11 @@
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=CMOV16rm  -benchmarks-file=- | FileCheck %s -check-prefixes=CHECK-YAML
+
+# https://bugs.llvm.org/show_bug.cgi?id=41448
+# Verify that we correctly serialize RegNo 0 as %noreg, not as an empty string!
+
+CHECK-YAML:      ---
+CHECK-YAML-NEXT: mode:            uops
+CHECK-YAML-NEXT: key:
+CHECK-YAML-NEXT:   instructions:
+CHECK-YAML-NEXT:     - 'CMOV16rm {{[A-Z0-9]+}} {{[A-Z0-9]+}} {{[A-Z0-9]+}} i_0x1 %noreg i_0x0 %noreg i_0x{{[0-9a-f]}}'
+CHECK-YAML-LAST: ...
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-CMOV16rm-noreg.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-CMOV16rm-noreg.s
deleted file mode 100644
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-CMOV16rm-noreg.s
+++ /dev/null
@@ -1,17 +0,0 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=CMOV16rm  -benchmarks-file=%t.CMOV16rm-uops.yaml
-# RUN: FileCheck -check-prefixes=CHECK-YAML -input-file=%t.CMOV16rm-uops.yaml %s
-# RUN: llvm-exegesis -mcpu=bdver2 -mode=analysis -benchmarks-file=%t.CMOV16rm-uops.yaml -analysis-clusters-output-file=- -analysis-clustering-epsilon=0.1 -analysis-inconsistency-epsilon=0.1 -analysis-numpoints=1 -analysis-clustering=naive | FileCheck -check-prefixes=CHECK-CLUSTERS %s
-
-# https://bugs.llvm.org/show_bug.cgi?id=41448
-# 1. Verify that we correctly serialize RegNo 0 as %noreg, not as an empty string!
-# 2. Verify that deserialization works. Since CMOV16rm has a variant sched class, just printing clusters is sufficient
-
-CHECK-YAML:      ---
-CHECK-YAML-NEXT: mode:            uops
-CHECK-YAML-NEXT: key:
-CHECK-YAML-NEXT:   instructions:
-CHECK-YAML-NEXT:     - 'CMOV16rm {{[A-Z0-9]+}} {{[A-Z0-9]+}} {{[A-Z0-9]+}} i_0x1 %noreg i_0x0 %noreg i_0x{{[0-9a-f]}}'
-CHECK-YAML-LAST: ...
-
-# CHECK-CLUSTERS: {{^}}cluster_id,opcode_name,config,sched_class,
-# CHECK-CLUSTERS-NEXT: {{^}}0,
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-FLDENVm.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-FLDENVm.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-FLDENVm.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-FLDENVm.s
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=FLDENVm,FLDL2E -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=FLDENVm,FLDL2E -repetition-mode=duplicate | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-LEA64r.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-LEA64r.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-LEA64r.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-LEA64r.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=LEA64r -repetition-mode=duplicate -max-configs-per-opcode=2 | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=LEA64r -repetition-mode=loop -max-configs-per-opcode=2 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=LEA64r -repetition-mode=duplicate -max-configs-per-opcode=2 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=LEA64r -repetition-mode=loop -max-configs-per-opcode=2 | FileCheck %s
 
 CHECK:      ---
 CHECK-NEXT: mode: uops
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-POPCNT32rr.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-POPCNT32rr.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-POPCNT32rr.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-POPCNT32rr.s
@@ -1,4 +1,4 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=POPCNT32rr 2>&1 | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=POPCNT32rr 2>&1 | FileCheck %s
 
 CHECK:      ---
 CHECK-NEXT: mode: uops
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-STD.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-STD.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-STD.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-STD.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=STD -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=STD -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=STD -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=STD -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-VFMADDSS4rm.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-VFMADDSS4rm.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-VFMADDSS4rm.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-VFMADDSS4rm.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=VFMADDSS4rm -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=VFMADDSS4rm -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=VFMADDSS4rm -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=VFMADDSS4rm -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-XCHG64rr.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-XCHG64rr.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-XCHG64rr.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-XCHG64rr.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=XCHG64rr -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=XCHG64rr -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=XCHG64rr -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=XCHG64rr -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-by-opcode-name.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-by-opcode-name.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-by-opcode-name.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-by-opcode-name.s
@@ -1,5 +1,5 @@
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD32rr -repetition-mode=duplicate | FileCheck %s
-# RUN: llvm-exegesis -mode=uops -opcode-name=ADD32rr -repetition-mode=loop | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD32rr -repetition-mode=duplicate | FileCheck %s
+# RUN: llvm-exegesis -march=x86-64 -mode=uops --dry-run -opcode-name=ADD32rr -repetition-mode=loop | FileCheck %s
 
 CHECK:      mode:            uops
 CHECK-NEXT: key:
diff --git a/llvm/test/tools/llvm-exegesis/X86/uops/uops-misspelled-div.s b/llvm/test/tools/llvm-exegesis/X86/uops/uops-misspelled-div.s
--- a/llvm/test/tools/llvm-exegesis/X86/uops/uops-misspelled-div.s
+++ b/llvm/test/tools/llvm-exegesis/X86/uops/uops-misspelled-div.s
@@ -1,7 +1,7 @@
-# RUN: not llvm-exegesis -mode=uops -snippets-file=%s 2>&1 | FileCheck %s
+# RUN: not llvm-exegesis -march=x86-64 -mode=uops --dry-run -snippets-file=%s 2>&1 | FileCheck %s
 
-# LLVM-EXEGESIS-DEFREG CL 1
-# LLVM-EXEGESIS-DEFREG AX 1
+# llvm-exegesis -march=x86-64-DEFREG CL 1
+# llvm-exegesis -march=x86-64-DEFREG AX 1
 div8r cl
 
 CHECK: error: invalid instruction mnemonic 'div8r'
diff --git a/llvm/test/tools/llvm-exegesis/lit.local.cfg b/llvm/test/tools/llvm-exegesis/lit.local.cfg
deleted file mode 100644
--- a/llvm/test/tools/llvm-exegesis/lit.local.cfg
+++ /dev/null
@@ -1,2 +0,0 @@
-if 'native' not in config.available_features:
-    config.unsupported = True
diff --git a/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.h b/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.h
--- a/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.h
+++ b/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.h
@@ -35,7 +35,8 @@
 class BenchmarkRunner {
 public:
   explicit BenchmarkRunner(const LLVMState &State,
-                           InstructionBenchmark::ModeE Mode);
+                           InstructionBenchmark::ModeE Mode,
+                           bool BenchmarkDryRun);
 
   virtual ~BenchmarkRunner();
 
@@ -77,6 +78,7 @@
 protected:
   const LLVMState &State;
   const InstructionBenchmark::ModeE Mode;
+  const bool BenchmarkDryRun;
 
 private:
   virtual Expected<std::vector<BenchmarkMeasure>>
diff --git a/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp b/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
--- a/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
+++ b/llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp
@@ -30,8 +30,10 @@
 namespace exegesis {
 
 BenchmarkRunner::BenchmarkRunner(const LLVMState &State,
-                                 InstructionBenchmark::ModeE Mode)
-    : State(State), Mode(Mode), Scratch(std::make_unique<ScratchSpace>()) {}
+                                 InstructionBenchmark::ModeE Mode,
+                                 bool BenchmarkDryRun)
+    : State(State), Mode(Mode), BenchmarkDryRun(BenchmarkDryRun),
+      Scratch(std::make_unique<ScratchSpace>()) {}
 
 BenchmarkRunner::~BenchmarkRunner() = default;
 
@@ -213,6 +215,11 @@
       ObjectFile = getObjectFromBuffer(OS.str());
     }
 
+    if (BenchmarkDryRun) {
+      InstrBenchmark.Error = "in --dry-run mode, actual measurements skipped.";
+      continue;
+    }
+
     const FunctionExecutorImpl Executor(State, std::move(ObjectFile),
                                         Scratch.get());
     auto NewMeasurements = runMeasurements(Executor);
diff --git a/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.h b/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.h
--- a/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.h
+++ b/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.h
@@ -23,6 +23,7 @@
 public:
   LatencyBenchmarkRunner(
       const LLVMState &State, InstructionBenchmark::ModeE Mode,
+      bool BenchmarkDryRun,
       InstructionBenchmark::ResultAggregationModeE ResultAggMode);
   ~LatencyBenchmarkRunner() override;
 
diff --git a/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.cpp b/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.cpp
--- a/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.cpp
+++ b/llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.cpp
@@ -20,8 +20,9 @@
 
 LatencyBenchmarkRunner::LatencyBenchmarkRunner(
     const LLVMState &State, InstructionBenchmark::ModeE Mode,
+    bool BenchmarkDryRun,
     InstructionBenchmark::ResultAggregationModeE ResultAgg)
-    : BenchmarkRunner(State, Mode) {
+    : BenchmarkRunner(State, Mode, BenchmarkDryRun) {
   assert((Mode == InstructionBenchmark::Latency ||
           Mode == InstructionBenchmark::InverseThroughput) &&
          "invalid mode");
diff --git a/llvm/tools/llvm-exegesis/lib/Target.h b/llvm/tools/llvm-exegesis/lib/Target.h
--- a/llvm/tools/llvm-exegesis/lib/Target.h
+++ b/llvm/tools/llvm-exegesis/lib/Target.h
@@ -155,6 +155,7 @@
   // Creates a benchmark runner for the given mode.
   Expected<std::unique_ptr<BenchmarkRunner>> createBenchmarkRunner(
       InstructionBenchmark::ModeE Mode, const LLVMState &State,
+      bool BenchmarkDryRun,
       InstructionBenchmark::ResultAggregationModeE ResultAggMode =
           InstructionBenchmark::Min) const;
 
@@ -193,9 +194,10 @@
       const LLVMState &State, const SnippetGenerator::Options &Opts) const;
   std::unique_ptr<BenchmarkRunner> virtual createLatencyBenchmarkRunner(
       const LLVMState &State, InstructionBenchmark::ModeE Mode,
+      bool BenchmarkDryRun,
       InstructionBenchmark::ResultAggregationModeE ResultAggMode) const;
   std::unique_ptr<BenchmarkRunner> virtual createUopsBenchmarkRunner(
-      const LLVMState &State,
+      const LLVMState &State, bool BenchmarkDryRun,
       InstructionBenchmark::ResultAggregationModeE ResultAggMode) const;
 
   const ExegesisTarget *Next = nullptr;
diff --git a/llvm/tools/llvm-exegesis/lib/Target.cpp b/llvm/tools/llvm-exegesis/lib/Target.cpp
--- a/llvm/tools/llvm-exegesis/lib/Target.cpp
+++ b/llvm/tools/llvm-exegesis/lib/Target.cpp
@@ -70,6 +70,7 @@
 Expected<std::unique_ptr<BenchmarkRunner>>
 ExegesisTarget::createBenchmarkRunner(
     InstructionBenchmark::ModeE Mode, const LLVMState &State,
+    bool BenchmarkDryRun,
     InstructionBenchmark::ResultAggregationModeE ResultAggMode) const {
   PfmCountersInfo PfmCounters = State.getPfmCounters();
   switch (Mode) {
@@ -77,21 +78,26 @@
     return nullptr;
   case InstructionBenchmark::Latency:
   case InstructionBenchmark::InverseThroughput:
-    if (!PfmCounters.CycleCounter) {
+    if (!BenchmarkDryRun && !PfmCounters.CycleCounter) {
       const char *ModeName = Mode == InstructionBenchmark::Latency
                                  ? "latency"
                                  : "inverse_throughput";
       return make_error<Failure>(
           Twine("can't run '")
               .concat(ModeName)
-              .concat("' mode, sched model does not define a cycle counter."));
+              .concat(
+                  "' mode, sched model does not define a cycle counter. You "
+                  "can pass --dry-run to skip the actual benchmarking."));
     }
-    return createLatencyBenchmarkRunner(State, Mode, ResultAggMode);
+    return createLatencyBenchmarkRunner(State, Mode, BenchmarkDryRun,
+                                        ResultAggMode);
   case InstructionBenchmark::Uops:
-    if (!PfmCounters.UopsCounter && !PfmCounters.IssueCounters)
-      return make_error<Failure>("can't run 'uops' mode, sched model does not "
-                                 "define uops or issue counters.");
-    return createUopsBenchmarkRunner(State, ResultAggMode);
+    if (!BenchmarkDryRun && !PfmCounters.UopsCounter &&
+        !PfmCounters.IssueCounters)
+      return make_error<Failure>(
+          "can't run 'uops' mode, sched model does not define uops or issue "
+          "counters. You can pass --dry-run to skip the actual benchmarking.");
+    return createUopsBenchmarkRunner(State, BenchmarkDryRun, ResultAggMode);
   }
   return nullptr;
 }
@@ -108,14 +114,16 @@
 
 std::unique_ptr<BenchmarkRunner> ExegesisTarget::createLatencyBenchmarkRunner(
     const LLVMState &State, InstructionBenchmark::ModeE Mode,
+    bool BenchmarkDryRun,
     InstructionBenchmark::ResultAggregationModeE ResultAggMode) const {
-  return std::make_unique<LatencyBenchmarkRunner>(State, Mode, ResultAggMode);
+  return std::make_unique<LatencyBenchmarkRunner>(State, Mode, BenchmarkDryRun,
+                                                  ResultAggMode);
 }
 
 std::unique_ptr<BenchmarkRunner> ExegesisTarget::createUopsBenchmarkRunner(
-    const LLVMState &State,
+    const LLVMState &State, bool BenchmarkDryRun,
     InstructionBenchmark::ResultAggregationModeE /*unused*/) const {
-  return std::make_unique<UopsBenchmarkRunner>(State);
+  return std::make_unique<UopsBenchmarkRunner>(State, BenchmarkDryRun);
 }
 
 static_assert(std::is_pod<PfmCountersInfo>::value,
diff --git a/llvm/tools/llvm-exegesis/lib/UopsBenchmarkRunner.h b/llvm/tools/llvm-exegesis/lib/UopsBenchmarkRunner.h
--- a/llvm/tools/llvm-exegesis/lib/UopsBenchmarkRunner.h
+++ b/llvm/tools/llvm-exegesis/lib/UopsBenchmarkRunner.h
@@ -21,8 +21,8 @@
 
 class UopsBenchmarkRunner : public BenchmarkRunner {
 public:
-  UopsBenchmarkRunner(const LLVMState &State)
-      : BenchmarkRunner(State, InstructionBenchmark::Uops) {}
+  UopsBenchmarkRunner(const LLVMState &State, bool BenchmarkDryRun)
+      : BenchmarkRunner(State, InstructionBenchmark::Uops, BenchmarkDryRun) {}
   ~UopsBenchmarkRunner() override;
 
   static constexpr const size_t kMinNumDifferentAddresses = 6;
diff --git a/llvm/tools/llvm-exegesis/llvm-exegesis.cpp b/llvm/tools/llvm-exegesis/llvm-exegesis.cpp
--- a/llvm/tools/llvm-exegesis/llvm-exegesis.cpp
+++ b/llvm/tools/llvm-exegesis/llvm-exegesis.cpp
@@ -35,6 +35,8 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Format.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/TargetSelect.h"
@@ -111,6 +113,12 @@
                    "All of the above and take the minimum of measurements")),
     cl::init(exegesis::InstructionBenchmark::Duplicate));
 
+static cl::opt<bool>
+    BenchmarkDryRun("dry-run",
+                    cl::desc("(only in -mode=?) do everything except actually "
+                             "performing the measurements"),
+                    cl::cat(BenchmarkOptions), cl::init(false));
+
 static cl::opt<unsigned>
     NumRepetitions("num-repetitions",
                    cl::desc("number of time to repeat the asm snippet"),
@@ -177,10 +185,21 @@
              "instead show only such unstable opcodes"),
     cl::cat(AnalysisOptions), cl::init(false));
 
-static cl::opt<std::string> CpuName(
-    "mcpu",
-    cl::desc("cpu name to use for pfm counters, leave empty to autodetect"),
-    cl::cat(Options), cl::init(""));
+static cl::opt<std::string>
+    ArchName("march",
+             cl::desc("Target architecture. "
+                      "See -version for available targets"),
+             cl::cat(Options));
+
+static cl::opt<std::string>
+    TripleName("mtriple",
+               cl::desc("Target triple. See -version for available targets"),
+               cl::cat(Options));
+
+static cl::opt<std::string>
+    MCPU("mcpu",
+         cl::desc("Target a specific cpu type (-mcpu=help for details)"),
+         cl::value_desc("cpu-name"), cl::cat(Options), cl::init("native"));
 
 static cl::opt<bool>
     DumpObjectToDisk("dump-object-to-disk",
@@ -291,28 +310,30 @@
 }
 
 void benchmarkMain() {
+  if (!BenchmarkDryRun) {
 #ifndef HAVE_LIBPFM
-  ExitWithError("benchmarking unavailable, LLVM was built without libpfm.");
+    ExitWithError("benchmarking unavailable, LLVM was built without libpfm. "
+                  "You can pass --dry-run to skip the actual benchmarking.");
+#else
+    if (exegesis::pfm::pfmInitialize())
+      ExitWithError("cannot initialize libpfm");
 #endif
+  }
 
-  if (exegesis::pfm::pfmInitialize())
-    ExitWithError("cannot initialize libpfm");
-
-  InitializeAllTargets();
-  InitializeAllTargetMCs();
   InitializeAllAsmPrinters();
   InitializeAllAsmParsers();
   InitializeAllExegesisTargets();
 
-  const LLVMState State = ExitOnErr(LLVMState::Create("", CpuName));
+  const LLVMState State = ExitOnErr(LLVMState::Create(TripleName, MCPU));
 
   // Preliminary check to ensure features needed for requested
   // benchmark mode are present on target CPU and/or OS.
-  ExitOnErr(State.getExegesisTarget().checkFeatureSupport());
+  if (!BenchmarkDryRun)
+    ExitOnErr(State.getExegesisTarget().checkFeatureSupport());
 
   const std::unique_ptr<BenchmarkRunner> Runner =
       ExitOnErr(State.getExegesisTarget().createBenchmarkRunner(
-          BenchmarkMode, State, ResultAggMode));
+          BenchmarkMode, State, BenchmarkDryRun, ResultAggMode));
   if (!Runner) {
     ExitWithError("cannot create benchmark runner");
   }
@@ -411,8 +432,6 @@
         "and --analysis-inconsistencies-output-file must be specified");
   }
 
-  InitializeAllTargets();
-  InitializeAllTargetMCs();
   InitializeAllAsmPrinters();
   InitializeAllDisassemblers();
   InitializeAllExegesisTargets();
@@ -433,10 +452,10 @@
                   "is unsupported.");
   }
   auto TripleAndCpu = *TriplesAndCpus.begin();
-  if (!CpuName.empty()) {
+  if (!MCPU.empty()) {
     llvm::errs() << "overridding file CPU name (" << TripleAndCpu.CpuName
-                 << ") with provided CPU name (" << CpuName << ")\n";
-    TripleAndCpu.CpuName = CpuName;
+                 << ") with provided CPU name (" << MCPU << ")\n";
+    TripleAndCpu.CpuName = MCPU;
   }
   llvm::errs() << "using Triple '" << TripleAndCpu.LLVMTriple << "' and CPU '"
                << TripleAndCpu.CpuName << "'\n";
@@ -469,12 +488,71 @@
       AnalysisInconsistenciesOutputFile);
 }
 
+namespace {
+
+const Target *getTarget(const char *ProgName) {
+  if (TripleName.empty())
+    TripleName = Triple::normalize(sys::getDefaultTargetTriple());
+  Triple TheTriple(TripleName);
+
+  // Get the target specific parser.
+  std::string Error;
+  const Target *TheTarget =
+      TargetRegistry::lookupTarget(ArchName, TheTriple, Error);
+  if (!TheTarget) {
+    errs() << ProgName << ": " << Error;
+    return nullptr;
+  }
+
+  // Update TripleName with the updated triple from the target lookup.
+  TripleName = TheTriple.str();
+
+  // Return the found target.
+  return TheTarget;
+}
+
+} // namespace
+
 } // namespace exegesis
 } // namespace llvm
 
 int main(int Argc, char **Argv) {
   using namespace llvm;
-  cl::ParseCommandLineOptions(Argc, Argv, "");
+
+  InitLLVM X(Argc, Argv);
+
+  // Initialize targets so we can print them when flag --version is specified.
+  InitializeAllTargetInfos();
+  InitializeAllTargets();
+  InitializeAllTargetMCs();
+
+  // Enable printing of available targets when flag --version is specified.
+  cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
+
+  cl::HideUnrelatedOptions({&llvm::exegesis::Options,
+                            &llvm::exegesis::BenchmarkOptions,
+                            &llvm::exegesis::AnalysisOptions});
+
+  cl::ParseCommandLineOptions(Argc, Argv,
+                              "llvm host machine instruction characteristics "
+                              "measurment and analysis.\n");
+
+  // Get the target from the triple. If a triple is not specified, then select
+  // the default triple for the host. If the triple doesn't correspond to any
+  // registered target, then exit with an error message.
+  const char *ProgName = Argv[0];
+  const Target *TheTarget = llvm::exegesis::getTarget(ProgName);
+  if (!TheTarget)
+    return 1;
+
+  if (llvm::exegesis::MCPU == "native")
+    llvm::exegesis::MCPU = std::string(llvm::sys::getHostCPUName());
+
+  std::unique_ptr<MCSubtargetInfo> STI(TheTarget->createMCSubtargetInfo(
+      llvm::exegesis::TripleName, llvm::exegesis::MCPU, ""));
+  assert(STI && "Unable to create subtarget info!");
+  if (!STI->isCPUStringValid(llvm::exegesis::MCPU))
+    return 1;
 
   exegesis::ExitOnErr.setExitCodeMapper([](const Error &Err) {
     if (Err.isA<exegesis::ClusteringError>())