llvm.org GIT mirror llvm / release_38 test / CodeGen / X86 / testb-je-fusion.ll
release_38

Tree @release_38 (Download .tar.gz)

testb-je-fusion.ll @release_38raw · history · blame

; RUN: llc < %s -march=x86-64 -mcpu=corei7-avx | FileCheck %s

; testb should be scheduled right before je to enable macro-fusion.

; CHECK: testb $2, %{{[abcd]}}h
; CHECK-NEXT: je

define i32 @check_flag(i32 %flags, ...) nounwind {
entry:
  %and = and i32 %flags, 512
  %tobool = icmp eq i32 %and, 0
  br i1 %tobool, label %if.end, label %if.then

if.then:
  br label %if.end

if.end:
  %hasflag = phi i32 [ 1, %if.then ], [ 0, %entry ]
  ret i32 %hasflag
}