llvm.org GIT mirror llvm / release_60 test / CodeGen / X86 / sunkaddr-ext.ll

Tree @release_60 (Download .tar.gz)

sunkaddr-ext.ll @release_60raw · history · blame

; RUN: llc < %s | FileCheck %s

; Test to make sure that if math that can roll over has been used we don't
; use the potential overflow as the basis for an address calculation later by
; sinking it into a different basic block.

target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.9.0"

; Function Attrs: nounwind ssp uwtable
define void @test_sink(i8* %arg1, i32 %arg2, i8 %arg3) #0 {
  %tmp1 = add i32 -2147483648, %arg2
  %tmp2 = add i32 -2147483648, %tmp1
  %tmp3 = getelementptr i8, i8* %arg1, i32 %arg2
  br label %bb1

  %tmp4 = getelementptr i8, i8* %arg1, i32 %tmp2
  store i8 %arg3, i8* %tmp4
  ret void;

; CHECK-LABEL: test_sink:
; CHECK:   movslq  %esi, [[TEMP:%[a-z0-9]+]]
; CHECK:   movb    %dl, (%rdi,[[TEMP]])
; CHECK:   retq