llvm/test/CodeGen/X86/memcmp-mergeexpand.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown-unknown               | FileCheck %s --check-prefix=X86
; RUN: llc < %s -mtriple=x86_64-unknown-unknown             | FileCheck %s --check-prefix=X64

; This tests interaction between MergeICmp and ExpandMemCmp.

%"struct.std::pair" = type { i32, i32 }

define zeroext i1 @opeq1(
; X86-LABEL: opeq1:
; X86:       # %bb.0: # %entry
; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
; X86-NEXT:    movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT:    movl (%ecx), %edx
; X86-NEXT:    cmpl (%eax), %edx
; X86-NEXT:    jne .LBB0_1
; X86-NEXT:  # %bb.2: # %land.rhs.i
; X86-NEXT:    movl 4(%ecx), %ecx
; X86-NEXT:    cmpl 4(%eax), %ecx
; X86-NEXT:    sete %al
; X86-NEXT:    # kill: def $al killed $al killed $eax
; X86-NEXT:    retl
; X86-NEXT:  .LBB0_1:
; X86-NEXT:    xorl %eax, %eax
; X86-NEXT:    # kill: def $al killed $al killed $eax
; X86-NEXT:    retl
;
; X64-LABEL: opeq1:
; X64:       # %bb.0: # %entry
; X64-NEXT:    movl (%rdi), %eax
; X64-NEXT:    cmpl (%rsi), %eax
; X64-NEXT:    jne .LBB0_1
; X64-NEXT:  # %bb.2: # %land.rhs.i
; X64-NEXT:    movl 4(%rdi), %eax
; X64-NEXT:    cmpl 4(%rsi), %eax
; X64-NEXT:    sete %al
; X64-NEXT:    # kill: def $al killed $al killed $eax
; X64-NEXT:    retq
; X64-NEXT:  .LBB0_1:
; X64-NEXT:    xorl %eax, %eax
; X64-NEXT:    # kill: def $al killed $al killed $eax
; X64-NEXT:    retq
  %"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
  %"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
entry:
  %first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
  %0 = load i32, i32* %first.i, align 4
  %first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
  %1 = load i32, i32* %first1.i, align 4
  %cmp.i = icmp eq i32 %0, %1
  br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit

land.rhs.i:
  %second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
  %2 = load i32, i32* %second.i, align 4
  %second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
  %3 = load i32, i32* %second2.i, align 4
  %cmp3.i = icmp eq i32 %2, %3
  br label %opeq1.exit

opeq1.exit:
  %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
  ret i1 %4
}