forked from OSchip/llvm-project
27 lines
1.1 KiB
LLVM
27 lines
1.1 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-- -mattr=avx512bw | FileCheck %s
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; This would infinite loop by trying to truncate to i16 and then promote back to i32.
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define i16 @PR40793(<8 x i16> %t1) {
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; CHECK-LABEL: PR40793:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vpextrw $5, %xmm0, %ecx
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; CHECK-NEXT: andb $15, %cl
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; CHECK-NEXT: movl $32733, %eax # imm = 0x7FDD
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; CHECK-NEXT: # kill: def $cl killed $cl killed $ecx
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; CHECK-NEXT: shrl %cl, %eax
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; CHECK-NEXT: # kill: def $ax killed $ax killed $eax
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; CHECK-NEXT: retq
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%t2 = and <8 x i16> %t1, <i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15>
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%t3 = lshr <8 x i16> <i16 25156, i16 -14844, i16 -26779, i16 -16956, i16 -13978, i16 32733, i16 -24894, i16 18530>, %t2
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%t4 = bitcast <8 x i16> %t3 to <2 x double>
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%t5 = call <2 x double> @llvm.fabs.v2f64(<2 x double> %t4)
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%t6 = bitcast <2 x double> %t5 to <8 x i16>
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%t7 = extractelement <8 x i16> %t6, i64 5
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ret i16 %t7
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}
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declare <2 x double> @llvm.fabs.v2f64(<2 x double>)
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