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[X86][FP16] Do not create VBROADCAST_LOAD for f16 without AVX2 (#91125)
AVX doesn't provide 16-bit BROADCAST instruction. Fixes #91005
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4 | ||
; RUN: llc -mtriple=x86_64-unknown-unknown -mattr=+f16c < %s | FileCheck %s | ||
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define void @PR91005(ptr %0) minsize { | ||
; CHECK-LABEL: PR91005: | ||
; CHECK: # %bb.0: | ||
; CHECK-NEXT: xorl %eax, %eax | ||
; CHECK-NEXT: testb %al, %al | ||
; CHECK-NEXT: je .LBB0_2 | ||
; CHECK-NEXT: # %bb.1: | ||
; CHECK-NEXT: vbroadcastss {{.*#+}} xmm0 = [31744,31744,31744,31744] | ||
; CHECK-NEXT: vpcmpeqw %xmm0, %xmm0, %xmm0 | ||
; CHECK-NEXT: vpinsrw $0, {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0, %xmm1 | ||
; CHECK-NEXT: vpand %xmm1, %xmm0, %xmm0 | ||
; CHECK-NEXT: vcvtph2ps %xmm0, %xmm0 | ||
; CHECK-NEXT: vpxor %xmm1, %xmm1, %xmm1 | ||
; CHECK-NEXT: vmulss %xmm1, %xmm0, %xmm0 | ||
; CHECK-NEXT: vcvtps2ph $4, %xmm0, %xmm0 | ||
; CHECK-NEXT: vmovd %xmm0, %eax | ||
; CHECK-NEXT: movw %ax, (%rdi) | ||
; CHECK-NEXT: .LBB0_2: # %common.ret | ||
; CHECK-NEXT: retq | ||
%2 = bitcast <2 x half> poison to <2 x i16> | ||
%3 = icmp eq <2 x i16> %2, <i16 31744, i16 31744> | ||
br i1 poison, label %4, label %common.ret | ||
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common.ret: ; preds = %4, %1 | ||
ret void | ||
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4: ; preds = %1 | ||
%5 = select <2 x i1> %3, <2 x half> <half 0xH3C00, half 0xH3C00>, <2 x half> zeroinitializer | ||
%6 = fmul <2 x half> %5, zeroinitializer | ||
%7 = fsub <2 x half> %6, zeroinitializer | ||
%8 = extractelement <2 x half> %7, i64 0 | ||
store half %8, ptr %0, align 2 | ||
br label %common.ret | ||
} | ||
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declare <2 x half> @llvm.fabs.v2f16(<2 x half>) |