41 lines
1.4 KiB
LLVM
41 lines
1.4 KiB
LLVM
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; RUN: opt < %s -ipsccp -S | FileCheck %s
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; Don't constant-propagate byval pointers, since they are not pointers!
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; PR5038
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%struct.MYstr = type { i8, i32 }
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@mystr = internal global %struct.MYstr zeroinitializer ; <%struct.MYstr*> [#uses=3]
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define internal void @vfu1(%struct.MYstr* byval(%struct.MYstr) align 4 %u) nounwind {
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entry:
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%0 = getelementptr %struct.MYstr, %struct.MYstr* %u, i32 0, i32 1 ; <i32*> [#uses=1]
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store i32 99, i32* %0, align 4
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; CHECK: %struct.MYstr* %u
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%1 = getelementptr %struct.MYstr, %struct.MYstr* %u, i32 0, i32 0 ; <i8*> [#uses=1]
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store i8 97, i8* %1, align 4
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; CHECK: %struct.MYstr* %u
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br label %return
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return: ; preds = %entry
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ret void
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}
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define internal i32 @vfu2(%struct.MYstr* byval(%struct.MYstr) align 4 %u) nounwind readonly {
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entry:
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%0 = getelementptr %struct.MYstr, %struct.MYstr* %u, i32 0, i32 1 ; <i32*> [#uses=1]
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%1 = load i32, i32* %0
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; CHECK: %struct.MYstr* @mystr, i{{..}} 0, i32 1
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%2 = getelementptr %struct.MYstr, %struct.MYstr* %u, i32 0, i32 0 ; <i8*> [#uses=1]
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%3 = load i8, i8* %2
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; CHECK: %struct.MYstr* @mystr, i{{..}} 0, i32 0
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%4 = zext i8 %3 to i32
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%5 = add i32 %4, %1
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ret i32 %5
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}
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define i32 @unions() nounwind {
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entry:
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call void @vfu1(%struct.MYstr* byval(%struct.MYstr) align 4 @mystr) nounwind
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%result = call i32 @vfu2(%struct.MYstr* byval(%struct.MYstr) align 4 @mystr) nounwind
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; CHECK: ret i32 %result
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ret i32 %result
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}
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