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[X86] Adding a test point for PR34149 'Suboptimal codegen for "fast" minnum and maxnum'
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Authored by jbhateja on Sep 8 2017, 2:12 AM.

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Buildable 10014
Build 10014: arc lint + arc unit

jbhateja added a subscriber: llvm-commits.

This revision is now accepted and ready to land.Sep 8 2017, 2:13 AM

This revision was automatically updated to reflect the committed changes.

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test/

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X86/

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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
				}