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30 lines
813 B
LLVM
30 lines
813 B
LLVM
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; RUN: opt < %s -instcombine -S | FileCheck %s
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@a = common global [60 x i8] zeroinitializer, align 1 ; <[60 x i8]*>
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@.str = private constant [8 x i8] c"abcdefg\00" ; <[8 x i8]*>
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define i32 @foo() nounwind {
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; CHECK: @foo
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; CHECK-NEXT: ret i32 60
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%1 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false)
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ret i32 %1
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}
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define i8* @bar() nounwind {
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; CHECK: @bar
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entry:
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%retval = alloca i8*
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%0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false)
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%cmp = icmp ne i32 %0, -1
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; CHECK: br i1 true
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br i1 %cmp, label %cond.true, label %cond.false
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cond.true:
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%1 = load i8** %retval;
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ret i8* %1;
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cond.false:
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%2 = load i8** %retval;
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ret i8* %2;
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}
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declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly
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