diff --git a/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp b/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
--- a/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
+++ b/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
@@ -98,5 +98,14 @@
       .clampScalar(0, XLenLLT, XLenLLT)
       .clampScalar(1, XLenLLT, XLenLLT);
 
+  getActionDefinitionsBuilder(G_BRCOND)
+      .legalFor({XLenLLT})
+      .minScalar(0, XLenLLT);
+
+  getActionDefinitionsBuilder(G_PHI)
+      .legalFor({p0, XLenLLT})
+      .widenScalarToNextPow2(0)
+      .clampScalar(0, XLenLLT, XLenLLT);
+
   getLegacyLegalizerInfo().computeTables();
 }
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp b/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
--- a/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
@@ -899,6 +899,10 @@
   if (I->getDesc().isIndirectBranch())
     return true;
 
+  // We can't handle Generic branch opcodes from Global ISel.
+  if (I->isPreISelOpcode())
+    return true;
+
   // We can't handle blocks with more than 2 terminators.
   if (NumTerminators > 2)
     return true;
diff --git a/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv32/legalize-phi.mir b/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv32/legalize-phi.mir
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv32/legalize-phi.mir
@@ -0,0 +1,630 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
+# RUN: llc -mtriple=riscv32 -run-pass=legalizer %s -o - \
+# RUN:   | FileCheck %s
+
+--- |
+  define i1 @phi_i1(i1 %cnd, i1 %a, i1 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i1 [ %b, %cond.false ], [ %a, %entry ]
+    ret i1 %cond
+  }
+
+  define i8 @phi_i8(i1 %cnd, i8 %a, i8 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i8 [ %b, %cond.false ], [ %a, %entry ]
+    ret i8 %cond
+  }
+
+  define i16 @phi_i16(i1 %cnd, i16 %a, i16 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i16 [ %b, %cond.false ], [ %a, %entry ]
+    ret i16 %cond
+  }
+
+  define i32 @phi_i32(i1 %cnd, i32 %a, i32 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i32 [ %b, %cond.false ], [ %a, %entry ]
+    ret i32 %cond
+  }
+
+  define ptr @phi_ptr(i1 %cnd, ptr %a, ptr %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi ptr [ %b, %cond.false ], [ %a, %entry ]
+    ret ptr %cond
+  }
+
+  define i48 @phi_i48(i1 %cnd, i48 %a, i48 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i48 [ %b, %cond.false ], [ %a, %entry ]
+    ret i48 %cond
+  }
+
+  define i64 @phi_i64(i1 %cnd, i64 %a, i64 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i64 [ %b, %cond.false ], [ %a, %entry ]
+    ret i64 %cond
+  }
+
+  define i72 @phi_i72(i1 %cnd, i72 %a, i72 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i72 [ %b, %cond.false ], [ %a, %entry ]
+    ret i72 %cond
+  }
+
+...
+---
+name:            phi_i1
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i1
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s32) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s32), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s32) = G_PHI [[COPY2]](s32), %bb.1, [[COPY1]](s32), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s32)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s32) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s32)
+    %4:_(s32) = COPY $x11
+    %1:_(s1) = G_TRUNC %4(s32)
+    %5:_(s32) = COPY $x12
+    %2:_(s1) = G_TRUNC %5(s32)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %6:_(s1) = G_PHI %2(s1), %bb.2, %1(s1), %bb.1
+    %7:_(s32) = G_ANYEXT %6(s1)
+    $x10 = COPY %7(s32)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_i8
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i8
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s32) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s32), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s32) = G_PHI [[COPY2]](s32), %bb.1, [[COPY1]](s32), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s32)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s32) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s32)
+    %4:_(s32) = COPY $x11
+    %1:_(s8) = G_TRUNC %4(s32)
+    %5:_(s32) = COPY $x12
+    %2:_(s8) = G_TRUNC %5(s32)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %6:_(s8) = G_PHI %2(s8), %bb.2, %1(s8), %bb.1
+    %7:_(s32) = G_ANYEXT %6(s8)
+    $x10 = COPY %7(s32)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_i16
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i16
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s32) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s32), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s32) = G_PHI [[COPY2]](s32), %bb.1, [[COPY1]](s32), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s32)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s32) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s32)
+    %4:_(s32) = COPY $x11
+    %1:_(s16) = G_TRUNC %4(s32)
+    %5:_(s32) = COPY $x12
+    %2:_(s16) = G_TRUNC %5(s32)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %6:_(s16) = G_PHI %2(s16), %bb.2, %1(s16), %bb.1
+    %7:_(s32) = G_ANYEXT %6(s16)
+    $x10 = COPY %7(s32)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_i32
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i32
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s32) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s32), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s32) = G_PHI [[COPY2]](s32), %bb.1, [[COPY1]](s32), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s32)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s32) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s32)
+    %1:_(s32) = COPY $x11
+    %2:_(s32) = COPY $x12
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %4:_(s32) = G_PHI %2(s32), %bb.2, %1(s32), %bb.1
+    $x10 = COPY %4(s32)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_ptr
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_ptr
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(p0) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(p0) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s32), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(p0) = G_PHI [[COPY2]](p0), %bb.1, [[COPY1]](p0), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](p0)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s32) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s32)
+    %1:_(p0) = COPY $x11
+    %2:_(p0) = COPY $x12
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %4:_(p0) = G_PHI %2(p0), %bb.2, %1(p0), %bb.1
+    $x10 = COPY %4(p0)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_i48
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+  - { id: 8, class: _ }
+  - { id: 9, class: _ }
+  - { id: 10, class: _ }
+  - { id: 11, class: _ }
+  - { id: 12, class: _ }
+  - { id: 13, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i48
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12, $x13, $x14
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s32) = COPY $x12
+  ; CHECK-NEXT:   [[COPY3:%[0-9]+]]:_(s32) = COPY $x13
+  ; CHECK-NEXT:   [[COPY4:%[0-9]+]]:_(s32) = COPY $x14
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s32), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s32) = G_PHI [[COPY3]](s32), %bb.1, [[COPY1]](s32), %bb.0
+  ; CHECK-NEXT:   [[PHI1:%[0-9]+]]:_(s32) = G_PHI [[COPY4]](s32), %bb.1, [[COPY2]](s32), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s32)
+  ; CHECK-NEXT:   $x11 = COPY [[PHI1]](s32)
+  ; CHECK-NEXT:   PseudoRET implicit $x10, implicit $x11
+  bb.1.entry:
+    liveins: $x10, $x11, $x12, $x13, $x14
+
+    %3:_(s32) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s32)
+    %4:_(s32) = COPY $x11
+    %5:_(s32) = COPY $x12
+    %6:_(s64) = G_MERGE_VALUES %4(s32), %5(s32)
+    %1:_(s48) = G_TRUNC %6(s64)
+    %7:_(s32) = COPY $x13
+    %8:_(s32) = COPY $x14
+    %9:_(s64) = G_MERGE_VALUES %7(s32), %8(s32)
+    %2:_(s48) = G_TRUNC %9(s64)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %10:_(s48) = G_PHI %2(s48), %bb.2, %1(s48), %bb.1
+    %13:_(s64) = G_ANYEXT %10(s48)
+    %11:_(s32), %12:_(s32) = G_UNMERGE_VALUES %13(s64)
+    $x10 = COPY %11(s32)
+    $x11 = COPY %12(s32)
+    PseudoRET implicit $x10, implicit $x11
+
+...
+---
+name:            phi_i64
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+  - { id: 8, class: _ }
+  - { id: 9, class: _ }
+  - { id: 10, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i64
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12, $x13, $x14
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s32) = COPY $x12
+  ; CHECK-NEXT:   [[COPY3:%[0-9]+]]:_(s32) = COPY $x13
+  ; CHECK-NEXT:   [[COPY4:%[0-9]+]]:_(s32) = COPY $x14
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s32), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s32) = G_PHI [[COPY3]](s32), %bb.1, [[COPY1]](s32), %bb.0
+  ; CHECK-NEXT:   [[PHI1:%[0-9]+]]:_(s32) = G_PHI [[COPY4]](s32), %bb.1, [[COPY2]](s32), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s32)
+  ; CHECK-NEXT:   $x11 = COPY [[PHI1]](s32)
+  ; CHECK-NEXT:   PseudoRET implicit $x10, implicit $x11
+  bb.1.entry:
+    liveins: $x10, $x11, $x12, $x13, $x14
+
+    %3:_(s32) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s32)
+    %4:_(s32) = COPY $x11
+    %5:_(s32) = COPY $x12
+    %1:_(s64) = G_MERGE_VALUES %4(s32), %5(s32)
+    %6:_(s32) = COPY $x13
+    %7:_(s32) = COPY $x14
+    %2:_(s64) = G_MERGE_VALUES %6(s32), %7(s32)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %8:_(s64) = G_PHI %2(s64), %bb.2, %1(s64), %bb.1
+    %9:_(s32), %10:_(s32) = G_UNMERGE_VALUES %8(s64)
+    $x10 = COPY %9(s32)
+    $x11 = COPY %10(s32)
+    PseudoRET implicit $x10, implicit $x11
+
+...
+---
+name:            phi_i72
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+  - { id: 8, class: _ }
+  - { id: 9, class: _ }
+  - { id: 10, class: _ }
+  - { id: 11, class: _ }
+  - { id: 12, class: _ }
+  - { id: 13, class: _ }
+  - { id: 14, class: _ }
+  - { id: 15, class: _ }
+  - { id: 16, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i72
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s32) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s32) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s32) = COPY $x11
+  ; CHECK-NEXT:   [[COPY3:%[0-9]+]]:_(s32) = COPY $x11
+  ; CHECK-NEXT:   [[COPY4:%[0-9]+]]:_(s32) = COPY $x12
+  ; CHECK-NEXT:   [[COPY5:%[0-9]+]]:_(s32) = COPY $x12
+  ; CHECK-NEXT:   [[COPY6:%[0-9]+]]:_(s32) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s32), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s32) = G_PHI [[COPY4]](s32), %bb.1, [[COPY1]](s32), %bb.0
+  ; CHECK-NEXT:   [[PHI1:%[0-9]+]]:_(s32) = G_PHI [[COPY5]](s32), %bb.1, [[COPY2]](s32), %bb.0
+  ; CHECK-NEXT:   [[PHI2:%[0-9]+]]:_(s32) = G_PHI [[COPY6]](s32), %bb.1, [[COPY3]](s32), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s32)
+  ; CHECK-NEXT:   $x10 = COPY [[PHI1]](s32)
+  ; CHECK-NEXT:   $x10 = COPY [[PHI2]](s32)
+  ; CHECK-NEXT:   PseudoRET implicit $x10, implicit $x10, implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s32) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s32)
+    %4:_(s32) = COPY $x11
+    %5:_(s32) = COPY $x11
+    %6:_(s32) = COPY $x11
+    %7:_(s96) = G_MERGE_VALUES %4(s32), %5(s32), %6(s32)
+    %1:_(s72) = G_TRUNC %7(s96)
+    %8:_(s32) = COPY $x12
+    %9:_(s32) = COPY $x12
+    %10:_(s32) = COPY $x12
+    %11:_(s96) = G_MERGE_VALUES %8(s32), %9(s32), %10(s32)
+    %2:_(s72) = G_TRUNC %11(s96)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %12:_(s72) = G_PHI %2(s72), %bb.2, %1(s72), %bb.1
+    %16:_(s96) = G_ANYEXT %12(s72)
+    %13:_(s32), %14:_(s32), %15:_(s32) = G_UNMERGE_VALUES %16(s96)
+    $x10 = COPY %13(s32)
+    $x10 = COPY %14(s32)
+    $x10 = COPY %15(s32)
+    PseudoRET implicit $x10, implicit $x10, implicit $x10
+
+...
diff --git a/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv64/legalize-phi.mir b/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv64/legalize-phi.mir
new file mode 100644
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/GlobalISel/legalizer/rv64/legalize-phi.mir
@@ -0,0 +1,697 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=riscv64 -run-pass=legalizer %s -o - \
+# RUN:   | FileCheck %s
+
+--- |
+  define i1 @phi_i1(i1 %cnd, i1 %a, i1 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i1 [ %b, %cond.false ], [ %a, %entry ]
+    ret i1 %cond
+  }
+
+  define i8 @phi_i8(i1 %cnd, i8 %a, i8 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i8 [ %b, %cond.false ], [ %a, %entry ]
+    ret i8 %cond
+  }
+
+  define i16 @phi_i16(i1 %cnd, i16 %a, i16 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i16 [ %b, %cond.false ], [ %a, %entry ]
+    ret i16 %cond
+  }
+
+  define i32 @phi_i32(i1 %cnd, i32 %a, i32 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i32 [ %b, %cond.false ], [ %a, %entry ]
+    ret i32 %cond
+  }
+
+  define i64 @phi_i64(i1 %cnd, i64 %a, i64 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i64 [ %b, %cond.false ], [ %a, %entry ]
+    ret i64 %cond
+  }
+
+  define ptr @phi_ptr(i1 %cnd, ptr %a, ptr %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi ptr [ %b, %cond.false ], [ %a, %entry ]
+    ret ptr %cond
+  }
+
+  define i72 @phi_i72(i1 %cnd, i72 %a, i72 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i72 [ %b, %cond.false ], [ %a, %entry ]
+    ret i72 %cond
+  }
+
+  define i128 @phi_i128(i1 %cnd, i128 %a, i128 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i128 [ %b, %cond.false ], [ %a, %entry ]
+    ret i128 %cond
+  }
+
+  define i192 @phi_i192(i1 %cnd, i192 %a, i192 %b) {
+  entry:
+    br i1 %cnd, label %cond.end, label %cond.false
+
+  cond.false:                                       ; preds = %entry
+    br label %cond.end
+
+  cond.end:                                         ; preds = %entry, %cond.false
+    %cond = phi i192 [ %b, %cond.false ], [ %a, %entry ]
+    ret i192 %cond
+  }
+
+...
+---
+name:            phi_i1
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i1
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s64), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s64) = G_PHI [[COPY2]](s64), %bb.1, [[COPY1]](s64), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s64)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s64) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s64)
+    %4:_(s64) = COPY $x11
+    %1:_(s1) = G_TRUNC %4(s64)
+    %5:_(s64) = COPY $x12
+    %2:_(s1) = G_TRUNC %5(s64)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %6:_(s1) = G_PHI %2(s1), %bb.2, %1(s1), %bb.1
+    %7:_(s64) = G_ANYEXT %6(s1)
+    $x10 = COPY %7(s64)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_i8
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i8
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s64), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s64) = G_PHI [[COPY2]](s64), %bb.1, [[COPY1]](s64), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s64)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s64) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s64)
+    %4:_(s64) = COPY $x11
+    %1:_(s8) = G_TRUNC %4(s64)
+    %5:_(s64) = COPY $x12
+    %2:_(s8) = G_TRUNC %5(s64)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %6:_(s8) = G_PHI %2(s8), %bb.2, %1(s8), %bb.1
+    %7:_(s64) = G_ANYEXT %6(s8)
+    $x10 = COPY %7(s64)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_i16
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i16
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s64), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s64) = G_PHI [[COPY2]](s64), %bb.1, [[COPY1]](s64), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s64)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s64) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s64)
+    %4:_(s64) = COPY $x11
+    %1:_(s16) = G_TRUNC %4(s64)
+    %5:_(s64) = COPY $x12
+    %2:_(s16) = G_TRUNC %5(s64)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %6:_(s16) = G_PHI %2(s16), %bb.2, %1(s16), %bb.1
+    %7:_(s64) = G_ANYEXT %6(s16)
+    $x10 = COPY %7(s64)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_i32
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i32
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s64), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s64) = G_PHI [[COPY2]](s64), %bb.1, [[COPY1]](s64), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s64)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s64) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s64)
+    %4:_(s64) = COPY $x11
+    %1:_(s32) = G_TRUNC %4(s64)
+    %5:_(s64) = COPY $x12
+    %2:_(s32) = G_TRUNC %5(s64)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %6:_(s32) = G_PHI %2(s32), %bb.2, %1(s32), %bb.1
+    %7:_(s64) = G_ANYEXT %6(s32)
+    $x10 = COPY %7(s64)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_i64
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i64
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s64), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s64) = G_PHI [[COPY2]](s64), %bb.1, [[COPY1]](s64), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s64)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s64) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s64)
+    %1:_(s64) = COPY $x11
+    %2:_(s64) = COPY $x12
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %4:_(s64) = G_PHI %2(s64), %bb.2, %1(s64), %bb.1
+    $x10 = COPY %4(s64)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_ptr
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_ptr
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(p0) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(p0) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s64), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(p0) = G_PHI [[COPY2]](p0), %bb.1, [[COPY1]](p0), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](p0)
+  ; CHECK-NEXT:   PseudoRET implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s64) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s64)
+    %1:_(p0) = COPY $x11
+    %2:_(p0) = COPY $x12
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %4:_(p0) = G_PHI %2(p0), %bb.2, %1(p0), %bb.1
+    $x10 = COPY %4(p0)
+    PseudoRET implicit $x10
+
+...
+---
+name:            phi_i72
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+  - { id: 8, class: _ }
+  - { id: 9, class: _ }
+  - { id: 10, class: _ }
+  - { id: 11, class: _ }
+  - { id: 12, class: _ }
+  - { id: 13, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i72
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12, $x13, $x14
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[COPY3:%[0-9]+]]:_(s64) = COPY $x13
+  ; CHECK-NEXT:   [[COPY4:%[0-9]+]]:_(s64) = COPY $x14
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s64), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s64) = G_PHI [[COPY3]](s64), %bb.1, [[COPY1]](s64), %bb.0
+  ; CHECK-NEXT:   [[PHI1:%[0-9]+]]:_(s64) = G_PHI [[COPY4]](s64), %bb.1, [[COPY2]](s64), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s64)
+  ; CHECK-NEXT:   $x11 = COPY [[PHI1]](s64)
+  ; CHECK-NEXT:   PseudoRET implicit $x10, implicit $x11
+  bb.1.entry:
+    liveins: $x10, $x11, $x12, $x13, $x14
+
+    %3:_(s64) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s64)
+    %4:_(s64) = COPY $x11
+    %5:_(s64) = COPY $x12
+    %6:_(s128) = G_MERGE_VALUES %4(s64), %5(s64)
+    %1:_(s72) = G_TRUNC %6(s128)
+    %7:_(s64) = COPY $x13
+    %8:_(s64) = COPY $x14
+    %9:_(s128) = G_MERGE_VALUES %7(s64), %8(s64)
+    %2:_(s72) = G_TRUNC %9(s128)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %10:_(s72) = G_PHI %2(s72), %bb.2, %1(s72), %bb.1
+    %13:_(s128) = G_ANYEXT %10(s72)
+    %11:_(s64), %12:_(s64) = G_UNMERGE_VALUES %13(s128)
+    $x10 = COPY %11(s64)
+    $x11 = COPY %12(s64)
+    PseudoRET implicit $x10, implicit $x11
+
+...
+---
+name:            phi_i128
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+  - { id: 8, class: _ }
+  - { id: 9, class: _ }
+  - { id: 10, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i128
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12, $x13, $x14
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[COPY3:%[0-9]+]]:_(s64) = COPY $x13
+  ; CHECK-NEXT:   [[COPY4:%[0-9]+]]:_(s64) = COPY $x14
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s64), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s64) = G_PHI [[COPY3]](s64), %bb.1, [[COPY1]](s64), %bb.0
+  ; CHECK-NEXT:   [[PHI1:%[0-9]+]]:_(s64) = G_PHI [[COPY4]](s64), %bb.1, [[COPY2]](s64), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s64)
+  ; CHECK-NEXT:   $x11 = COPY [[PHI1]](s64)
+  ; CHECK-NEXT:   PseudoRET implicit $x10, implicit $x11
+  bb.1.entry:
+    liveins: $x10, $x11, $x12, $x13, $x14
+
+    %3:_(s64) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s64)
+    %4:_(s64) = COPY $x11
+    %5:_(s64) = COPY $x12
+    %1:_(s128) = G_MERGE_VALUES %4(s64), %5(s64)
+    %6:_(s64) = COPY $x13
+    %7:_(s64) = COPY $x14
+    %2:_(s128) = G_MERGE_VALUES %6(s64), %7(s64)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %8:_(s128) = G_PHI %2(s128), %bb.2, %1(s128), %bb.1
+    %9:_(s64), %10:_(s64) = G_UNMERGE_VALUES %8(s128)
+    $x10 = COPY %9(s64)
+    $x11 = COPY %10(s64)
+    PseudoRET implicit $x10, implicit $x11
+
+...
+---
+name:            phi_i192
+alignment:       4
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+  - { id: 3, class: _ }
+  - { id: 4, class: _ }
+  - { id: 5, class: _ }
+  - { id: 6, class: _ }
+  - { id: 7, class: _ }
+  - { id: 8, class: _ }
+  - { id: 9, class: _ }
+  - { id: 10, class: _ }
+  - { id: 11, class: _ }
+  - { id: 12, class: _ }
+  - { id: 13, class: _ }
+frameInfo:
+  maxAlignment:    1
+machineFunctionInfo:
+  varArgsFrameIndex: 0
+  varArgsSaveSize: 0
+body:             |
+  ; CHECK-LABEL: name: phi_i192
+  ; CHECK: bb.0.entry:
+  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK-NEXT:   liveins: $x10, $x11, $x12
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT:   [[COPY:%[0-9]+]]:_(s64) = COPY $x10
+  ; CHECK-NEXT:   [[COPY1:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY2:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY3:%[0-9]+]]:_(s64) = COPY $x11
+  ; CHECK-NEXT:   [[COPY4:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[COPY5:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[COPY6:%[0-9]+]]:_(s64) = COPY $x12
+  ; CHECK-NEXT:   [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+  ; CHECK-NEXT:   [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY]], [[C]]
+  ; CHECK-NEXT:   G_BRCOND [[AND]](s64), %bb.2
+  ; CHECK-NEXT:   G_BR %bb.1
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.1.cond.false:
+  ; CHECK-NEXT:   successors: %bb.2(0x80000000)
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: {{  $}}
+  ; CHECK-NEXT: bb.2.cond.end:
+  ; CHECK-NEXT:   [[PHI:%[0-9]+]]:_(s64) = G_PHI [[COPY4]](s64), %bb.1, [[COPY1]](s64), %bb.0
+  ; CHECK-NEXT:   [[PHI1:%[0-9]+]]:_(s64) = G_PHI [[COPY5]](s64), %bb.1, [[COPY2]](s64), %bb.0
+  ; CHECK-NEXT:   [[PHI2:%[0-9]+]]:_(s64) = G_PHI [[COPY6]](s64), %bb.1, [[COPY3]](s64), %bb.0
+  ; CHECK-NEXT:   $x10 = COPY [[PHI]](s64)
+  ; CHECK-NEXT:   $x10 = COPY [[PHI1]](s64)
+  ; CHECK-NEXT:   $x10 = COPY [[PHI2]](s64)
+  ; CHECK-NEXT:   PseudoRET implicit $x10, implicit $x10, implicit $x10
+  bb.1.entry:
+    liveins: $x10, $x11, $x12
+
+    %3:_(s64) = COPY $x10
+    %0:_(s1) = G_TRUNC %3(s64)
+    %4:_(s64) = COPY $x11
+    %5:_(s64) = COPY $x11
+    %6:_(s64) = COPY $x11
+    %1:_(s192) = G_MERGE_VALUES %4(s64), %5(s64), %6(s64)
+    %7:_(s64) = COPY $x12
+    %8:_(s64) = COPY $x12
+    %9:_(s64) = COPY $x12
+    %2:_(s192) = G_MERGE_VALUES %7(s64), %8(s64), %9(s64)
+    G_BRCOND %0(s1), %bb.3
+    G_BR %bb.2
+
+  bb.2.cond.false:
+
+  bb.3.cond.end:
+    %10:_(s192) = G_PHI %2(s192), %bb.2, %1(s192), %bb.1
+    %11:_(s64), %12:_(s64), %13:_(s64) = G_UNMERGE_VALUES %10(s192)
+    $x10 = COPY %11(s64)
+    $x10 = COPY %12(s64)
+    $x10 = COPY %13(s64)
+    PseudoRET implicit $x10, implicit $x10, implicit $x10
+
+...