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When DAGCombiner visits a SIGN_EXTEND_INREG of a BUILD_VECTOR with constant operands, a new BUILD_VECTOR node will be created transformed constants. Llvm-stress found a case where the new BUILD_VECTOR had constant operands of an illegal type, because the (legal) element type is in fact not a legal scalar type. This patch changes this so that the new BUILD_VECTOR has the same operand type as the old one. Review: Eli Friedman, Nirav Dave https://bugs.llvm.org//show_bug.cgi?id=32422 llvm-svn: 299540
27 lines
830 B
LLVM
27 lines
830 B
LLVM
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
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;
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; Check that DAGCombiner does not crash after producing an illegal
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; BUILD_VECTOR node.
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define void @pr32422() {
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; CHECK: cdbr %f0, %f0
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; CHECK: jo .LBB0_1
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BB:
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%I = insertelement <8 x i8> zeroinitializer, i8 -95, i32 3
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%I8 = insertelement <8 x i8> zeroinitializer, i8 -119, i32 2
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%FC = uitofp <8 x i8> %I8 to <8 x float>
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%Cmp18 = fcmp uno <8 x float> zeroinitializer, %FC
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%I22 = insertelement <8 x i1> %Cmp18, i1 true, i32 5
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br label %CF
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CF: ; preds = %CF, %BB
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%Cmp40 = fcmp uno double 0xC663C682E9619F00, undef
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br i1 %Cmp40, label %CF, label %CF353
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CF353: ; preds = %CF
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%E195 = extractelement <8 x i1> %I22, i32 4
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ret void
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}
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