1 ; RUN: llc < %s | FileCheck %s 2 3 ; Test to make sure that if math that can roll over has been used we don't 4 ; use the potential overflow as the basis for an address calculation later by 5 ; sinking it into a different basic block. 6 7 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 8 target triple = "x86_64-apple-macosx10.9.0" 9 10 ; Function Attrs: nounwind ssp uwtable 11 define void @test_sink(i8* %arg1, i32 %arg2, i8 %arg3) #0 { 12 %tmp1 = add i32 -2147483648, %arg2 13 %tmp2 = add i32 -2147483648, %tmp1 14 %tmp3 = getelementptr i8, i8* %arg1, i32 %arg2 15 br label %bb1 16 17 bb1: 18 %tmp4 = getelementptr i8, i8* %arg1, i32 %tmp2 19 store i8 %arg3, i8* %tmp4 20 ret void; 21 } 22 23 ; CHECK-LABEL: test_sink: 24 ; CHECK: movslq %esi, [[TEMP:%[a-z0-9]+]] 25 ; CHECK: movb %dl, (%rdi,[[TEMP]]) 26 ; CHECK: retq 27
