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[AArch64] Fix crash caused by performExtractVectorEltCombine on DUP n…
…odes with float operands. Reviewed By: dmgreen Differential Revision: https://reviews.llvm.org/D148705
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2 | ||
; RUN: llc -mtriple=arm64-unknown-unknown < %s -o -| FileCheck %s | ||
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; This test covers a case where extract_vector_elt is selected when DUP is | ||
; generated. Where it tries to generate a ZextOrTrunc node with floating point | ||
; type resulting in a crash. | ||
; See https://reviews.llvm.org/D128144#4280024 for context | ||
define void @dot_product(double %a) { | ||
; CHECK-LABEL: dot_product: | ||
; CHECK: // %bb.0: // %entry | ||
; CHECK-NEXT: fmov d1, #1.00000000 | ||
; CHECK-NEXT: fadd d0, d0, d1 | ||
; CHECK-NEXT: fadd d0, d0, d1 | ||
; CHECK-NEXT: movi d1, #0000000000000000 | ||
; CHECK-NEXT: fadd d0, d0, d1 | ||
; CHECK-NEXT: fsqrt d0, d0 | ||
; CHECK-NEXT: fcmp d0, #0.0 | ||
; CHECK-NEXT: ret | ||
entry: | ||
%fadd = call double @llvm.vector.reduce.fadd.v3f64(double %a, <3 x double> <double 1.000000e+00, double 1.000000e+00, double 0.000000e+00>) | ||
%sqrt = call double @llvm.sqrt.f64(double %fadd) | ||
%insert = insertelement <3 x double> zeroinitializer, double %sqrt, i64 0 | ||
%shuffle = shufflevector <3 x double> %insert, <3 x double> zeroinitializer, <3 x i32> zeroinitializer | ||
%mul = fmul <3 x double> %shuffle, <double 1.000000e+00, double 1.000000e+00, double 0.000000e+00> | ||
%shuffle.1 = extractelement <3 x double> %mul, i64 0 | ||
%shuffle.2 = extractelement <3 x double> %mul, i64 1 | ||
%cmp = fcmp ogt double %shuffle.2, 0.000000e+00 | ||
br i1 %cmp, label %exit, label %bb.1 | ||
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bb.1: | ||
%mul.2 = fmul double %shuffle.1, 0.000000e+00 | ||
br label %exit | ||
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exit: | ||
ret void | ||
} | ||
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declare double @llvm.sqrt.f64(double) | ||
declare double @llvm.vector.reduce.fadd.v3f64(double, <3 x double>) |