0ef24aa549
A (csmith) test case appeared where combineExtract() crashed when the input vector was a bitcast into a vector of i1:s. Fix this by adding a check with canTreatAsByteVector() before the call.
21 lines
545 B
LLVM
21 lines
545 B
LLVM
; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z16 < %s | FileCheck %s
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;
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; Check that DAGCombiner doesn't crash in SystemZ combineExtract()
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; when handling EXTRACT_VECTOR_ELT with a vector of i1:s.
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define i32 @fun(i32 %arg) {
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; CHECK-LABEL: fun:
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entry:
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%cc = icmp eq i32 %arg, 0
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br label %loop
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loop:
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%P = phi <128 x i1> [ zeroinitializer, %entry ], [ bitcast (<2 x i64> <i64 3, i64 3> to <128 x i1>), %loop ]
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br i1 %cc, label %exit, label %loop
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exit:
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%E = extractelement <128 x i1> %P, i64 0
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%Res = zext i1 %E to i32
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ret i32 %Res
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}
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