8ef5da7010
The tablegen patterns on vector_extract only match i32 constants, but on wasm64 these come in as i64 constants. In certain situations this would cause crashes whenever it couldn't select an extract_vector_elt instruction. Rather than add duplicate patterns for every instruction, this just canonicalizes the constant to be i32 when lowering. Fixes https://github.com/llvm/llvm-project/issues/57577 Differential Revision: https://reviews.llvm.org/D140205
19 lines
652 B
LLVM
19 lines
652 B
LLVM
; RUN: llc < %s -mattr=+simd128 -verify-machineinstrs -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals
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; Regression test for a crash on wasm64 when trying to lower extract_vector_elt
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; with a 64 bit constant:
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;
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; t19: i64 = extract_vector_elt t18, Constant:i64<0>
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target triple = "wasm64-unknown-unknown"
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define void @foo() {
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store <4 x i32> zeroinitializer, ptr poison, align 16
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%1 = load <4 x i32>, ptr poison, align 16
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%2 = extractelement <4 x i32> %1, i32 0
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%3 = insertelement <2 x i32> undef, i32 %2, i32 0
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%4 = insertelement <2 x i32> %3, i32 poison, i32 1
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store <2 x i32> %4, ptr poison, align 8
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unreachable
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}
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