0df3200931
If all the demanded elements are poison, return unknown instead of conflict to avoid downstream assertions. Fixes https://github.com/llvm/llvm-project/issues/75505.
18 lines
675 B
LLVM
18 lines
675 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -S -passes=instsimplify < %s | FileCheck %s
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; Just make sure that we don't assert.
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define i32 @test(<2 x i16> %a, i32 %b) {
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; CHECK-LABEL: define i32 @test(
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; CHECK-SAME: <2 x i16> [[A:%.*]], i32 [[B:%.*]]) {
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; CHECK-NEXT: [[MUL:%.*]] = mul <2 x i16> [[A]], <i16 -1, i16 poison>
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; CHECK-NEXT: [[BC:%.*]] = bitcast <2 x i16> [[MUL]] to i32
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; CHECK-NEXT: [[LSHR:%.*]] = lshr i32 [[B]], [[BC]]
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; CHECK-NEXT: ret i32 [[LSHR]]
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;
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%mul = mul <2 x i16> %a, <i16 -1, i16 poison>
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%bc = bitcast <2 x i16> %mul to i32
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%lshr = lshr i32 %b, %bc
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ret i32 %lshr
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}
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