forked from OSchip/llvm-project
44 lines
1.3 KiB
LLVM
44 lines
1.3 KiB
LLVM
; Test objectsize bounds checking that won't verify until after -instcombine.
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; RUN: opt < %s -disable-verify -instcombine -S | opt -S | FileCheck %s
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; We need target data to get the sizes of the arrays and structures.
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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declare i32 @llvm.objectsize.i32.p0i8(i8*, i1) nounwind readonly
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; CHECK-LABEL: @PR13390(
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define i32 @PR13390(i1 %bool, i8* %a) {
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entry:
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%cond = or i1 %bool, true
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br i1 %cond, label %return, label %xpto
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xpto:
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%select = select i1 %bool, i8* %select, i8* %a
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%select2 = select i1 %bool, i8* %a, i8* %select2
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%0 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select, i1 true)
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%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select2, i1 true)
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%2 = add i32 %0, %1
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; CHECK: ret i32 undef
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ret i32 %2
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return:
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ret i32 42
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}
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; CHECK-LABEL: @PR13621(
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define i32 @PR13621(i1 %bool) nounwind {
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entry:
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%cond = or i1 %bool, true
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br i1 %cond, label %return, label %xpto
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; technically reachable, but this malformed IR may appear as a result of constant propagation
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xpto:
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%gep2 = getelementptr i8, i8* %gep, i32 1
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%gep = getelementptr i8, i8* %gep2, i32 1
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%o = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 true)
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; CHECK: ret i32 undef
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ret i32 %o
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return:
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ret i32 7
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}
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