File: 2011-06-02-CallSlotOverwritten.ll

package info (click to toggle)
llvm-3.0 3.0-10
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 75,412 kB
  • sloc: cpp: 468,043; asm: 109,345; ansic: 13,782; sh: 12,935; ml: 4,716; python: 4,351; perl: 2,096; makefile: 1,905; pascal: 1,578; exp: 389; xml: 283; lisp: 187; csh: 117
file content (36 lines) | stat: -rw-r--r-- 1,216 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s
; PR10067
; Make sure the call+copy isn't optimized in such a way that
; %ret ends up with the wrong value.

target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
target triple = "i386-apple-darwin10"

%struct1 = type { i32, i32 }
%struct2 = type { %struct1, i8* }

declare void @bar(%struct1* nocapture sret %agg.result) nounwind

define i32 @foo() nounwind {
  %x = alloca %struct1, align 8
  %y = alloca %struct2, align 8
  call void @bar(%struct1* sret %x) nounwind
; CHECK: call void @bar(%struct1* sret %x)

  %gepn1 = getelementptr inbounds %struct2* %y, i32 0, i32 0, i32 0
  store i32 0, i32* %gepn1, align 8
  %gepn2 = getelementptr inbounds %struct2* %y, i32 0, i32 0, i32 1
  store i32 0, i32* %gepn2, align 4

  %bit1 = bitcast %struct1* %x to i64*
  %bit2 = bitcast %struct2* %y to i64*
  %load = load i64* %bit1, align 8
  store i64 %load, i64* %bit2, align 8

; CHECK: %load = load i64* %bit1, align 8
; CHECK: store i64 %load, i64* %bit2, align 8

  %gep1 = getelementptr %struct2* %y, i32 0, i32 0, i32 0
  %ret = load i32* %gep1
  ret i32 %ret
}