62 lines
2.1 KiB
LLVM
62 lines
2.1 KiB
LLVM
; RUN: opt -basicaa -memdep -mldst-motion -S < %s | FileCheck %s
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; RUN: opt -aa-pipeline=basic-aa -passes='require<memdep>',mldst-motion \
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; RUN: -S < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@r = common global i32 0, align 4
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@s = common global i32 0, align 4
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; CHECK-LABEL: define void @test1(
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define void @test1(i1 %cmp, i32* noalias %p) {
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entry:
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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call void @may_exit() nounwind
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%arrayidx = getelementptr inbounds i32, i32* %p, i64 1
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%0 = load i32, i32* %arrayidx, align 4
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store i32 %0, i32* @r, align 4
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br label %if.end
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; CHECK: call void @may_exit()
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; CHECK-NEXT: %[[gep:.*]] = getelementptr inbounds i32, i32* %p, i64 1
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; CHECK-NEXT: %[[load:.*]] = load i32, i32* %[[gep]], align 4
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; CHECK-NEXT: store i32 %[[load]], i32* @r, align 4
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if.else: ; preds = %entry
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%arrayidx1 = getelementptr inbounds i32, i32* %p, i64 1
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%1 = load i32, i32* %arrayidx1, align 4
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store i32 %1, i32* @s, align 4
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void
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}
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; CHECK-LABEL: define void @test2(
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define void @test2(i1 %cmp, i32* noalias %p) {
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entry:
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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%arrayidx = getelementptr inbounds i32, i32* %p, i64 1
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store i32 1, i32* %arrayidx, align 4
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call void @may_throw()
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; CHECK: %[[gep:.*]] = getelementptr inbounds i32, i32* %p, i64 1
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; CHECK-NEXT: store i32 1, i32* %[[gep]], align 4
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; CHECK-NEXT: call void @may_throw()
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br label %if.end
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if.else: ; preds = %entry
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%arrayidx1 = getelementptr inbounds i32, i32* %p, i64 1
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store i32 2, i32* %arrayidx1, align 4
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void
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}
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declare void @may_throw()
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declare void @may_exit() nounwind
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