| Eli Friedman | 70d893e | 2011-06-02 21:24:42 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s |
| 2 | ; PR10067 |
| 3 | ; Make sure the call+copy isn't optimized in such a way that |
| 4 | ; %ret ends up with the wrong value. |
| 5 | |
| 6 | 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" |
| 7 | target triple = "i386-apple-darwin10" |
| 8 | |
| 9 | %struct1 = type { i32, i32 } |
| 10 | %struct2 = type { %struct1, i8* } |
| 11 | |
| 12 | declare void @bar(%struct1* nocapture sret %agg.result) nounwind |
| 13 | |
| 14 | define i32 @foo() nounwind { |
| 15 | %x = alloca %struct1, align 8 |
| 16 | %y = alloca %struct2, align 8 |
| 17 | call void @bar(%struct1* sret %x) nounwind |
| 18 | ; CHECK: call void @bar(%struct1* sret %x) |
| 19 | |
| 20 | %gepn1 = getelementptr inbounds %struct2* %y, i32 0, i32 0, i32 0 |
| 21 | store i32 0, i32* %gepn1, align 8 |
| 22 | %gepn2 = getelementptr inbounds %struct2* %y, i32 0, i32 0, i32 1 |
| 23 | store i32 0, i32* %gepn2, align 4 |
| 24 | |
| 25 | %bit1 = bitcast %struct1* %x to i64* |
| 26 | %bit2 = bitcast %struct2* %y to i64* |
| 27 | %load = load i64* %bit1, align 8 |
| 28 | store i64 %load, i64* %bit2, align 8 |
| 29 | |
| 30 | ; CHECK: %load = load i64* %bit1, align 8 |
| 31 | ; CHECK: store i64 %load, i64* %bit2, align 8 |
| 32 | |
| 33 | %gep1 = getelementptr %struct2* %y, i32 0, i32 0, i32 0 |
| 34 | %ret = load i32* %gep1 |
| 35 | ret i32 %ret |
| 36 | } |