| Eli Friedman | 56efe24 | 2011-08-17 22:22:24 +0000 | [diff] [blame] | 1 | ; RUN: opt -basicaa -memcpyopt -S < %s | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| 4 | target triple = "x86_64-apple-macosx10.7.0" |
| 5 | |
| 6 | @x = global i32 0 |
| 7 | |
| 8 | declare void @otherf(i32*) |
| 9 | |
| 10 | declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind |
| 11 | |
| 12 | ; memcpyopt should not touch atomic ops |
| 13 | define void @test1() nounwind uwtable ssp { |
| 14 | ; CHECK: test1 |
| 15 | ; CHECK: store atomic |
| 16 | %x = alloca [101 x i32], align 16 |
| 17 | %bc = bitcast [101 x i32]* %x to i8* |
| 18 | call void @llvm.memset.p0i8.i64(i8* %bc, i8 0, i64 400, i32 16, i1 false) |
| 19 | %gep1 = getelementptr inbounds [101 x i32]* %x, i32 0, i32 100 |
| 20 | store atomic i32 0, i32* %gep1 unordered, align 4 |
| 21 | %gep2 = getelementptr inbounds [101 x i32]* %x, i32 0, i32 0 |
| 22 | call void @otherf(i32* %gep2) |
| 23 | ret void |
| 24 | } |
| 25 | |
| 26 | ; memcpyopt across unordered store |
| 27 | define void @test2() nounwind uwtable ssp { |
| 28 | ; CHECK: test2 |
| 29 | ; CHECK: call |
| 30 | ; CHECK-NEXT: store atomic |
| 31 | ; CHECK-NEXT: call |
| 32 | %old = alloca i32 |
| 33 | %new = alloca i32 |
| 34 | call void @otherf(i32* nocapture %old) |
| 35 | store atomic i32 0, i32* @x unordered, align 4 |
| 36 | %v = load i32* %old |
| 37 | store i32 %v, i32* %new |
| 38 | call void @otherf(i32* nocapture %new) |
| 39 | ret void |
| 40 | } |
| 41 | |