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[X86] Adding a test point for PR34149 'Suboptimal codegen for "fast" …
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…minnum and maxnum'

Differential Revision: https://reviews.llvm.org/D37614

llvm-svn: 312778
jbhateja committed Sep 8, 2017
1 parent 5f37541 commit a251312
Showing 1 changed file with 40 additions and 0 deletions.
40 changes: 40 additions & 0 deletions llvm/test/CodeGen/X86/pr34149.ll
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py

; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=haswell | FileCheck %s

declare <4 x double> @llvm.minnum.v4f64(<4 x double> %x, <4 x double> %y)
declare <4 x double> @llvm.maxnum.v4f64(<4 x double> %x, <4 x double> %y)

define <4 x double> @via_minnum(<4 x double> %x, <4 x double> %y) {
; CHECK-LABEL: via_minnum:
; CHECK: # BB#0:
; CHECK-NEXT: vminpd %ymm0, %ymm1, %ymm2
; CHECK-NEXT: vcmpunordpd %ymm0, %ymm0, %ymm0
; CHECK-NEXT: vblendvpd %ymm0, %ymm1, %ymm2, %ymm0
; CHECK-NEXT: retq
%z = call fast <4 x double> @llvm.minnum.v4f64(<4 x double> %x, <4 x double> %y) readnone
ret <4 x double> %z
}

define <4 x double> @via_maxnum(<4 x double> %x, <4 x double> %y) {
; CHECK-LABEL: via_maxnum:
; CHECK: # BB#0:
; CHECK-NEXT: vmaxpd %ymm0, %ymm1, %ymm2
; CHECK-NEXT: vcmpunordpd %ymm0, %ymm0, %ymm0
; CHECK-NEXT: vblendvpd %ymm0, %ymm1, %ymm2, %ymm0
; CHECK-NEXT: retq
%z = call fast <4 x double> @llvm.maxnum.v4f64(<4 x double> %x, <4 x double> %y) readnone
ret <4 x double> %z
}

define <4 x double> @via_fcmp(<4 x double> %x, <4 x double> %y) {
; CHECK-LABEL: via_fcmp:
; CHECK: # BB#0:
; CHECK-NEXT: vminpd %ymm0, %ymm1, %ymm0
; CHECK-NEXT: retq
%c = fcmp ule <4 x double> %x, %y
%z = select <4 x i1> %c, <4 x double> %x, <4 x double> %y
ret <4 x double> %z
}


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