forked from OSchip/llvm-project
27 lines
789 B
LLVM
27 lines
789 B
LLVM
; 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* %arg1, i32 %arg2
|
|
br label %bb1
|
|
|
|
bb1:
|
|
%tmp4 = getelementptr 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
|