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- ; RUN: opt -basicaa -memcpyopt -S < %s | FileCheck %s
- 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"
- target triple = "x86_64-apple-macosx10.7.0"
- @x = global i32 0
- declare void @otherf(i32*)
- declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
- ; memcpyopt should not touch atomic ops
- define void @test1() nounwind uwtable ssp {
- ; CHECK: test1
- ; CHECK: store atomic
- %x = alloca [101 x i32], align 16
- %bc = bitcast [101 x i32]* %x to i8*
- call void @llvm.memset.p0i8.i64(i8* %bc, i8 0, i64 400, i32 16, i1 false)
- %gep1 = getelementptr inbounds [101 x i32], [101 x i32]* %x, i32 0, i32 100
- store atomic i32 0, i32* %gep1 unordered, align 4
- %gep2 = getelementptr inbounds [101 x i32], [101 x i32]* %x, i32 0, i32 0
- call void @otherf(i32* %gep2)
- ret void
- }
- ; memcpyopt across unordered store
- define void @test2() nounwind uwtable ssp {
- ; CHECK: test2
- ; CHECK: call
- ; CHECK-NEXT: store atomic
- ; CHECK-NEXT: call
- %old = alloca i32
- %new = alloca i32
- call void @otherf(i32* nocapture %old)
- store atomic i32 0, i32* @x unordered, align 4
- %v = load i32, i32* %old
- store i32 %v, i32* %new
- call void @otherf(i32* nocapture %new)
- ret void
- }
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