56 lines
2.3 KiB
LLVM
56 lines
2.3 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -basic-aa -memcpyopt -S < %s -enable-memcpyopt-memoryssa=0 | FileCheck %s
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; RUN: opt -basic-aa -memcpyopt -S < %s -enable-memcpyopt-memoryssa=1 -verify-memoryssa | 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, 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-LABEL: @test1(
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; CHECK-NEXT: [[X:%.*]] = alloca [101 x i32], align 16
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; CHECK-NEXT: [[BC:%.*]] = bitcast [101 x i32]* [[X]] to i8*
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; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 16 [[BC]], i8 0, i64 400, i1 false)
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds [101 x i32], [101 x i32]* [[X]], i32 0, i32 100
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; CHECK-NEXT: store atomic i32 0, i32* [[GEP1]] unordered, align 4
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; CHECK-NEXT: [[GEP2:%.*]] = getelementptr inbounds [101 x i32], [101 x i32]* [[X]], i32 0, i32 0
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; CHECK-NEXT: call void @otherf(i32* [[GEP2]])
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; CHECK-NEXT: ret void
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;
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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* align 16 %bc, i8 0, i64 400, i1 false)
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%gep1 = getelementptr inbounds [101 x i32], [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], [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-LABEL: @test2(
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; CHECK-NEXT: [[OLD:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[NEW:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @otherf(i32* nocapture [[NEW]])
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; CHECK-NEXT: store atomic i32 0, i32* @x unordered, align 4
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; CHECK-NEXT: call void @otherf(i32* nocapture [[NEW]])
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; CHECK-NEXT: ret void
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;
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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, 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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