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