[llvm] [X86] Combine `uitofp <v x i32> to <v x half>` (PR #121809)

[Simon Pilgrim via llvm-commits]

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@@ -0,0 +1,133 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=x86_64-- -mattr=+avx,+f16c | FileCheck %s -check-prefix=AVX
+; RUN: llc < %s -mtriple=x86_64-- -mattr=+avx512vl | FileCheck %s -check-prefix=AVX512
+
+define <8 x half> @test_UINT_TO_FP_no_inf8(<8 x i32> %a) {
+; AVX-LABEL: test_UINT_TO_FP_no_inf8:
+; AVX:       # %bb.0: # %entry
+; AVX-NEXT:    vpsrld $16, %xmm0, %xmm1
+; AVX-NEXT:    vextractf128 $1, %ymm0, %xmm2
+; AVX-NEXT:    vpsrld $16, %xmm2, %xmm2
+; AVX-NEXT:    vinsertf128 $1, %xmm2, %ymm1, %ymm1
+; AVX-NEXT:    vcvtdq2ps %ymm1, %ymm1
+; AVX-NEXT:    vmulps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm1, %ymm1
+; AVX-NEXT:    vandps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm0
+; AVX-NEXT:    vcvtdq2ps %ymm0, %ymm0
+; AVX-NEXT:    vaddps %ymm0, %ymm1, %ymm0
+; AVX-NEXT:    vcvtps2ph $4, %ymm0, %xmm0
+; AVX-NEXT:    vzeroupper
+; AVX-NEXT:    retq
+;
+; AVX512-LABEL: test_UINT_TO_FP_no_inf8:
+; AVX512:       # %bb.0: # %entry
+; AVX512-NEXT:    vcvtudq2ps %ymm0, %ymm0
+; AVX512-NEXT:    vcvtps2ph $4, %ymm0, %xmm0
+; AVX512-NEXT:    vzeroupper
+; AVX512-NEXT:    retq
+entry:
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RKSimon wrote:

remove the entry tags

https://github.com/llvm/llvm-project/pull/121809