llvm/llvm/test/CodeGen/X86/bug47278.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=i386-unknown-linux-musl -verify-machineinstrs -run-pass=regallocfast -o -  %s | FileCheck %s
# RUN: llc -mtriple=i386-unknown-linux-musl -verify-machineinstrs -passes=regallocfast -o -  %s | FileCheck %s

# Make sure this case doesn't assert or try to assign $ecx to %1 on
# SHRD32rrCL

---
name:            foo
tracksRegLiveness: true
body:             |
  bb.0:
    ; CHECK-LABEL: name: foo
    ; CHECK: renamable $eax = IMPLICIT_DEF
    ; CHECK: renamable $edx = MOVZX32rm8 renamable $eax, 1, $noreg, 0, $noreg :: (load (s8) from `ptr undef` + 20, align 4, basealign 16)
    ; CHECK: dead renamable $ecx = MOV32rm renamable $eax, 1, $noreg, 0, $noreg :: (load (s32) from `ptr undef` + 12, basealign 16)
    ; CHECK: renamable $al = MOV8rm killed renamable $eax, 1, $noreg, 0, $noreg :: (load (s8) from `ptr undef`, align 4)
    ; CHECK: dead renamable $ecx = COPY renamable $edx
    ; CHECK: dead renamable $ecx = COPY renamable $edx
    ; CHECK: dead renamable $ecx = COPY renamable $edx
    ; CHECK: renamable $esi = IMPLICIT_DEF
    ; CHECK: renamable $ecx = IMPLICIT_DEF
    ; CHECK: renamable $ecx = CMOV32rr renamable $ecx, killed renamable $esi, 2, implicit undef $eflags
    ; CHECK: renamable $cl = MOV8ri -128
    ; CHECK: $cl = IMPLICIT_DEF
    ; CHECK: renamable $eax = COPY renamable $edx
    ; CHECK: dead renamable $eax = SHRD32rrCL renamable $eax, killed renamable $edx, implicit-def dead $eflags, implicit killed $cl
    ; CHECK: RET32
    %0:gr32 = IMPLICIT_DEF
    %1:gr32 = MOVZX32rm8 %0, 1, $noreg, 0, $noreg :: (load (s8) from `ptr undef` + 20, align 4, basealign 16)
    %2:gr32 = MOV32rm %0, 1, $noreg, 0, $noreg :: (load (s32) from `ptr undef` + 12, basealign 16)
    %3:gr8 = MOV8rm %0, 1, $noreg, 0, $noreg :: (load (s8) from `ptr undef`, align 4)
    %4:gr32 = COPY %1
    %5:gr32 = COPY %1
    %6:gr32 = COPY %1
    %7:gr32 = IMPLICIT_DEF
    %8:gr32 = IMPLICIT_DEF
    %8:gr32 = CMOV32rr %8, killed %7, 2, implicit undef $eflags
    %9:gr8 = MOV8ri -128
    %9:gr8 = COPY %3
    $cl = IMPLICIT_DEF
    %8:gr32 = COPY %1
    %8:gr32 = SHRD32rrCL %8, %1, implicit-def dead $eflags, implicit $cl
    RET32

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