diff --git a/lld/test/MachO/adhoc-codesign.s b/lld/test/MachO/adhoc-codesign.s
--- a/lld/test/MachO/adhoc-codesign.s
+++ b/lld/test/MachO/adhoc-codesign.s
@@ -56,25 +56,25 @@
 # RUN: llvm-objdump --macho --all-headers %t/out| FileCheck --check-prefix=NO-ADHOC %s
 
 
-# RUN: ld64.lld -arch arm64 -platform_version ios-simulator 14.0 15.0 -execute -o %t/out %t/main-arm64-sim.o -syslibroot %S/Inputs/iPhoneSimulator.sdk -lSystem
+# RUN: %lld-noarg -arch arm64 -platform_version ios-simulator 14.0 15.0 -execute -o %t/out %t/main-arm64-sim.o -syslibroot %S/Inputs/iPhoneSimulator.sdk -lSystem
 # RUN: llvm-objdump --macho --all-headers %t/out | FileCheck --check-prefix=NO-ADHOC %s
-# RUN: ld64.lld -arch arm64 -platform_version ios-simulator 14.0 15.0 -dylib   -o %t/out %t/foo-arm64-sim.o
+# RUN: %lld-noarg -arch arm64 -platform_version ios-simulator 14.0 15.0 -dylib   -o %t/out %t/foo-arm64-sim.o
 # RUN: llvm-objdump --macho --all-headers  %t/out| FileCheck --check-prefix=NO-ADHOC %s
-# RUN: ld64.lld -arch arm64 -platform_version ios-simulator 14.0 15.0 -bundle  -o %t/out %t/foo-arm64-sim.o
+# RUN: %lld-noarg -arch arm64 -platform_version ios-simulator 14.0 15.0 -bundle  -o %t/out %t/foo-arm64-sim.o
 # RUN: llvm-objdump --macho --all-headers  %t/out| FileCheck --check-prefix=NO-ADHOC %s
 
-# RUN: ld64.lld -arch arm64 -platform_version ios-simulator 14.0 15.0 -execute -adhoc_codesign -o %t/out %t/main-arm64-sim.o -syslibroot %S/Inputs/iPhoneSimulator.sdk -lSystem
+# RUN: %lld-noarg -arch arm64 -platform_version ios-simulator 14.0 15.0 -execute -adhoc_codesign -o %t/out %t/main-arm64-sim.o -syslibroot %S/Inputs/iPhoneSimulator.sdk -lSystem
 # RUN: llvm-objdump --macho --all-headers %t/out| FileCheck --check-prefix=ADHOC %s
-# RUN: ld64.lld -arch arm64 -platform_version ios-simulator 14.0 15.0 -dylib   -adhoc_codesign -o %t/out %t/foo-arm64-sim.o
+# RUN: %lld-noarg -arch arm64 -platform_version ios-simulator 14.0 15.0 -dylib   -adhoc_codesign -o %t/out %t/foo-arm64-sim.o
 # RUN: llvm-objdump --macho --all-headers %t/out| FileCheck --check-prefix=ADHOC %s
-# RUN: ld64.lld -arch arm64 -platform_version ios-simulator 14.0 15.0 -bundle  -adhoc_codesign -o %t/out %t/foo-arm64-sim.o
+# RUN: %lld-noarg -arch arm64 -platform_version ios-simulator 14.0 15.0 -bundle  -adhoc_codesign -o %t/out %t/foo-arm64-sim.o
 # RUN: llvm-objdump --macho --all-headers %t/out| FileCheck --check-prefix=ADHOC %s
 
-# RUN: ld64.lld -lSystem -arch arm64 -platform_version ios-simulator 14.0 15.0 -execute -no_adhoc_codesign -o %t/out %t/main-arm64-sim.o -syslibroot %S/Inputs/iPhoneSimulator.sdk
+# RUN: %lld-noarg -lSystem -arch arm64 -platform_version ios-simulator 14.0 15.0 -execute -no_adhoc_codesign -o %t/out %t/main-arm64-sim.o -syslibroot %S/Inputs/iPhoneSimulator.sdk
 # RUN: llvm-objdump --macho --all-headers %t/out| FileCheck --check-prefix=NO-ADHOC %s
-# RUN: ld64.lld -arch arm64 -platform_version ios-simulator 14.0 15.0 -dylib   -no_adhoc_codesign -o %t/out %t/foo-arm64-sim.o
+# RUN: %lld-noarg -arch arm64 -platform_version ios-simulator 14.0 15.0 -dylib   -no_adhoc_codesign -o %t/out %t/foo-arm64-sim.o
 # RUN: llvm-objdump --macho --all-headers %t/out| FileCheck --check-prefix=NO-ADHOC %s
-# RUN: ld64.lld -arch arm64 -platform_version ios-simulator 14.0 15.0 -bundle  -no_adhoc_codesign -o %t/out %t/foo-arm64-sim.o
+# RUN: %lld-noarg -arch arm64 -platform_version ios-simulator 14.0 15.0 -bundle  -no_adhoc_codesign -o %t/out %t/foo-arm64-sim.o
 # RUN: llvm-objdump --macho --all-headers %t/out| FileCheck --check-prefix=NO-ADHOC %s
 
 # ADHOC:          cmd LC_CODE_SIGNATURE
diff --git a/lld/test/MachO/invalid/stub-link.s b/lld/test/MachO/invalid/stub-link.s
--- a/lld/test/MachO/invalid/stub-link.s
+++ b/lld/test/MachO/invalid/stub-link.s
@@ -6,7 +6,7 @@
 # RUN: mkdir -p %t
 #
 # RUN: llvm-mc -filetype obj -triple x86_64-apple-ios %s -o %t/test.o
-# RUN: not ld64.lld -arch x86_64 -platform_version ios 14.0 15.0 -o %t/test \
+# RUN: not %lld-noarg -arch x86_64 -platform_version ios 14.0 15.0 -o %t/test \
 # RUN:   -syslibroot %S/../Inputs/iPhoneSimulator.sdk -lSystem %t/test.o 2>&1 | FileCheck %s
 
 # CHECK-DAG: error: undefined symbol: __cache_handle_memory_pressure_event
diff --git a/lld/test/MachO/lit.local.cfg b/lld/test/MachO/lit.local.cfg
--- a/lld/test/MachO/lit.local.cfg
+++ b/lld/test/MachO/lit.local.cfg
@@ -15,6 +15,8 @@
 config.substitutions.append(('%lld-watchos', lld_watchos + ' -fatal_warnings'))
 config.substitutions.append(('%no_fatal_warnings_lld-watchos', lld_watchos))
 
+config.substitutions.append(('%lld-noarg', 'ld64.lld'))
+
 # Since most of our tests are written around x86_64, we give this platform the
 # shortest substitution of "%lld".
 lld = ('ld64.lld -arch x86_64 -platform_version macos 10.15 11.0 -syslibroot ' +
diff --git a/lld/test/MachO/reproduce.s b/lld/test/MachO/reproduce.s
--- a/lld/test/MachO/reproduce.s
+++ b/lld/test/MachO/reproduce.s
@@ -38,7 +38,7 @@
 # RUN: FileCheck %s --check-prefix=VERSION < repro1/version.txt
 # VERSION: LLD
 
-# RUN: cd repro1; ld64.lld @response.txt
+# RUN: cd repro1; %lld-noarg @response.txt
 
 # RUN: mkdir -p %t.dir/build2/a/b/c
 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos %s -o %t.dir/build2/foo.o
@@ -51,7 +51,7 @@
 # RSP2-NOT:  {{^}}repro2{{[/\\]}}
 # RSP2:      {{[/\\]}}foo.o
 
-# RUN: cd repro2; ld64.lld @response.txt
+# RUN: cd repro2; %lld-noarg @response.txt
 
 .globl _main
 _main:
diff --git a/lld/test/MachO/reroot-path.s b/lld/test/MachO/reroot-path.s
--- a/lld/test/MachO/reroot-path.s
+++ b/lld/test/MachO/reroot-path.s
@@ -25,25 +25,25 @@
 ## Test our various file-loading flags to make sure all bases are covered.
 # RUN: %lld --reproduce %t/repro1.tar -lSystem -syslibroot %t %t/foo.a %t/bar.a %t/test.o -o /dev/null -t | FileCheck %s -DDIR="%t/%:t"
 # RUN: tar xf %t/repro1.tar -C %t
-# RUN: cd %t/repro1; ld64.lld @response.txt | FileCheck %s -DDIR="%:t/%:t"
+# RUN: cd %t/repro1; %lld-noarg @response.txt | FileCheck %s -DDIR="%:t/%:t"
 
 # RUN: %lld --reproduce %t/repro2.tar -lSystem -syslibroot %t -force_load %t/foo.a -force_load %t/bar.a %t/test.o -o /dev/null -t | FileCheck %s -DDIR="%t/%:t"
 # RUN: tar xf %t/repro2.tar -C %t
-# RUN: cd %t/repro2; ld64.lld @response.txt | FileCheck %s -DDIR="%:t/%:t"
+# RUN: cd %t/repro2; %lld-noarg @response.txt | FileCheck %s -DDIR="%:t/%:t"
 
 # RUN: %lld --reproduce %t/repro3.tar -lSystem -syslibroot %t %t/libfoo.dylib %t/libbar.dylib %t/test.o -o /dev/null -t | FileCheck %s -DDIR="%t/%:t"
 # RUN: tar xf %t/repro3.tar -C %t
-# RUN: cd %t/repro3; ld64.lld @response.txt | FileCheck %s -DDIR="%:t/%:t"
+# RUN: cd %t/repro3; %lld-noarg @response.txt | FileCheck %s -DDIR="%:t/%:t"
 
 # RUN: %lld --reproduce %t/repro4.tar -lSystem -syslibroot %t -weak_library %t/libfoo.dylib -weak_library %t/libbar.dylib %t/test.o -o /dev/null -t | FileCheck %s -DDIR="%t/%:t"
 # RUN: tar xf %t/repro4.tar -C %t
-# RUN: cd %t/repro4; ld64.lld @response.txt | FileCheck %s -DDIR="%:t/%:t"
+# RUN: cd %t/repro4; %lld-noarg @response.txt | FileCheck %s -DDIR="%:t/%:t"
 
 # RUN: echo "%t/libfoo.dylib" > %t/filelist
 # RUN: echo "%t/libbar.dylib" >> %t/filelist
 # RUN: %lld --reproduce %t/repro5.tar -lSystem -syslibroot %t -filelist %t/filelist %t/test.o -o /dev/null -t | FileCheck %s -DDIR="%t/%:t"
 # RUN: tar xf %t/repro5.tar -C %t
-# RUN: cd %t/repro5; ld64.lld @response.txt | FileCheck %s -DDIR="%:t/%:t"
+# RUN: cd %t/repro5; %lld-noarg @response.txt | FileCheck %s -DDIR="%:t/%:t"
 
 ## The {{^}} ensures that we only match relative paths if DIR is relative.
 # CHECK: {{^}}[[DIR]]/{{(lib)?}}bar
@@ -63,7 +63,7 @@
 # RUN: FileCheck %s --check-prefix=UNDEF < %t/error
 
 # RUN: tar xf %t/repro6.tar -C %t
-# RUN: cd %t/repro6; not ld64.lld @response.txt 2> %t/error | FileCheck %s -DDIR="%:t/%:t" --check-prefix=FOO
+# RUN: cd %t/repro6; not %lld-noarg @response.txt 2> %t/error | FileCheck %s -DDIR="%:t/%:t" --check-prefix=FOO
 # RUN: FileCheck %s --check-prefix=UNDEF < %t/error
 
 # FOO: [[DIR]]/libfoo.dylib
diff --git a/lld/test/MachO/search-paths-darwin.test b/lld/test/MachO/search-paths-darwin.test
--- a/lld/test/MachO/search-paths-darwin.test
+++ b/lld/test/MachO/search-paths-darwin.test
@@ -3,7 +3,7 @@
 
 RUN: mkdir -p %t1 %t2
 
-RUN: not ld64.lld -arch x86_64 -platform_version macos 10.5 11.0 -v -L%t1 -F%t2 2>&1 | FileCheck -DLDIR=%t1 -DFDIR=%t2 %s
+RUN: not %lld-noarg -arch x86_64 -platform_version macos 10.5 11.0 -v -L%t1 -F%t2 2>&1 | FileCheck -DLDIR=%t1 -DFDIR=%t2 %s
 CHECK:      Library search paths:
 CHECK-NEXT: [[LDIR]]
 CHECK-NEXT: /usr/lib
@@ -12,7 +12,7 @@
 CHECK-NEXT: /Library/Frameworks
 CHECK-NEXT: /System/Library/Frameworks
 
-RUN: not ld64.lld -arch x86_64 -platform_version macos 10.5 11.0 -v -L%t1 -F%t2 -Z 2>&1 | FileCheck -DLDIR=%t1 -DFDIR=%t2 --check-prefix=CHECK_Z %s
+RUN: not %lld-noarg -arch x86_64 -platform_version macos 10.5 11.0 -v -L%t1 -F%t2 -Z 2>&1 | FileCheck -DLDIR=%t1 -DFDIR=%t2 --check-prefix=CHECK_Z %s
 CHECK_Z:      Library search paths:
 CHECK_Z-NEXT: [[LDIR]]
 CHECK_Z-NEXT: Framework search paths:
diff --git a/lld/test/MachO/skip-platform-checks.s b/lld/test/MachO/skip-platform-checks.s
--- a/lld/test/MachO/skip-platform-checks.s
+++ b/lld/test/MachO/skip-platform-checks.s
@@ -1,7 +1,7 @@
 # REQUIRES: x86, aarch64
 # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-iossimulator %s -o %t.o
 ## This should succeed even though libsystem_kernel.dylib has a mismatched platform.
-# RUN: ld64.lld -lSystem -arch x86_64 -platform_version ios-simulator 14.0 15.0 \
+# RUN: %lld-noarg -lSystem -arch x86_64 -platform_version ios-simulator 14.0 15.0 \
 # RUN:   -syslibroot %S/Inputs/iPhoneSimulator.sdk %t.o -o %t
 # RUN: llvm-objdump --macho --bind %t | FileCheck %s
 # CHECK: __DATA_CONST __got  0x100001000 pointer  0 libSystem  dyld_stub_binder
diff --git a/lld/test/MachO/syslibroot.test b/lld/test/MachO/syslibroot.test
--- a/lld/test/MachO/syslibroot.test
+++ b/lld/test/MachO/syslibroot.test
@@ -1,7 +1,7 @@
 # Ensure that a nonexistent path is ignored with a syslibroot
 # Don't use %lld to not pick up the default syslibroot flag.
 
-RUN: ld64.lld -arch x86_64 -platform_version macos 10 11 -v -dylib \
+RUN: %lld-noarg -arch x86_64 -platform_version macos 10 11 -v -dylib \
 RUN:     -o /dev/null -syslibroot /var/empty 2>&1 \
 RUN:     | FileCheck %s -check-prefix CHECK-NONEXISTENT-SYSLIBROOT
 
@@ -9,7 +9,7 @@
 CHECK-NONEXISTENT-SYSLIBROOT-NEXT: Framework search paths:
 
 RUN: mkdir -p %t/usr/lib
-RUN: ld64.lld -arch x86_64 -platform_version macos 10 11 -v -dylib \
+RUN: %lld-noarg -arch x86_64 -platform_version macos 10 11 -v -dylib \
 RUN:     -o /dev/null -syslibroot %t 2>&1 \
 RUN:     | FileCheck %s -check-prefix CHECK-SYSLIBROOT -DROOT=%t
 
@@ -18,7 +18,7 @@
 CHECK-SYSLIBROOT-NEXT: [[ROOT]]/usr/lib
 
 RUN: mkdir -p %t/Library/libxml2-development
-RUN: ld64.lld -arch x86_64 -platform_version macos 10 11 -v -dylib \
+RUN: %lld-noarg -arch x86_64 -platform_version macos 10 11 -v -dylib \
 RUN:     -o /dev/null -syslibroot %t -L /Library/libxml2-development 2>&1 \
 RUN:     | FileCheck %s -check-prefix CHECK-ABSOLUTE-PATH-REROOTED -DROOT=%t
 
@@ -26,14 +26,14 @@
 CHECK-ABSOLUTE-PATH-REROOTED: [[ROOT]]/Library/libxml2-development
 CHECK-ABSOLUTE-PATH-REROOTED: [[ROOT]]/usr/lib
 
-RUN: ld64.lld -arch x86_64 -platform_version macos 10 11 -v -dylib \
+RUN: %lld-noarg -arch x86_64 -platform_version macos 10 11 -v -dylib \
 RUN:     -o /dev/null -syslibroot %t -L %t/Library/libxml2-development 2>&1 \
 RUN:     | FileCheck %s -check-prefix CHECK-PATH-WITHOUT-REROOT -DPATH=%t/Library/libxml2-development
 CHECK-PATH-WITHOUT-REROOT:      Library search paths:
 CHECK-PATH-WITHOUT-REROOT-NEXT: [[PATH]]
 
 RUN: mkdir -p %t.2/usr/lib
-RUN: ld64.lld -arch x86_64 -platform_version macos 10 11 -v -dylib \
+RUN: %lld-noarg -arch x86_64 -platform_version macos 10 11 -v -dylib \
 RUN:     -o /dev/null -syslibroot %t -syslibroot %t.2 2>&1 \
 RUN:     | FileCheck %s -check-prefix CHECK-SYSLIBROOT-MATRIX -DROOT=%t
 
@@ -41,7 +41,7 @@
 CHECK-SYSLIBROOT-MATRIX: [[ROOT]]/usr/lib
 CHECK-SYSLIBROOT-MATRIX: [[ROOT]].2/usr/lib
 
-RUN: ld64.lld -arch x86_64 -platform_version macos 10 11 -v -dylib \
+RUN: %lld-noarg -arch x86_64 -platform_version macos 10 11 -v -dylib \
 RUN:     -o /dev/null -syslibroot %t -syslibroot %t.2 -syslibroot / 2>&1 \
 RUN:     | FileCheck %s -check-prefix CHECK-SYSLIBROOT-IGNORED -DROOT=%t
 
@@ -50,7 +50,7 @@
 CHECK-SYSLIBROOT-IGNORED-NOT: [[ROOT]].2/usr/lib
 
 RUN: mkdir -p %t/System/Library/Frameworks
-RUN: ld64.lld -arch x86_64 -platform_version macos 10 11 -v -dylib \
+RUN: %lld-noarg -arch x86_64 -platform_version macos 10 11 -v -dylib \
 RUN:     -o /dev/null -syslibroot %t 2>&1 \
 RUN:     | FileCheck %s -check-prefix CHECK-SYSLIBROOT-FRAMEWORK -DROOT=%t
 
@@ -59,7 +59,7 @@
 
 RUN: mkdir -p %t/Library/Frameworks
 RUN: mkdir -p %t.2/Library/Frameworks
-RUN: ld64.lld -arch x86_64 -platform_version macos 10 11 -v -dylib \
+RUN: %lld-noarg -arch x86_64 -platform_version macos 10 11 -v -dylib \
 RUN:     -o /dev/null  -syslibroot %t -syslibroot %t.2 \
 RUN:     -F /Library/Frameworks 2>&1 \
 RUN:     | FileCheck %s -check-prefix CHECK-SYSLIBROOT-FRAMEWORK-MATRIX -DROOT=%t
@@ -68,7 +68,7 @@
 CHECK-SYSLIBROOT-FRAMEWORK-MATRIX: [[ROOT]]/Library/Frameworks
 CHECK-SYSLIBROOT-FRAMEWORK-MATRIX: [[ROOT]].2/Library/Frameworks
 
-RUN: ld64.lld -arch x86_64 -platform_version macos 10 11 -v -dylib \
+RUN: %lld-noarg -arch x86_64 -platform_version macos 10 11 -v -dylib \
 RUN:     -o /dev/null -syslibroot %t -syslibroot %t.2 -syslibroot / \
 RUN:     -F /Library/Frameworks 2>&1 \
 RUN:     | FileCheck %s -check-prefix CHECK-SYSLIBROOT-FRAMEWORK-IGNORED -DROOT=%t