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Mark FMA3 instructions as commutable so that the operands to the multiply part can be commuted.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163001 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2012-08-31 16:31:13 +00:00
parent 89b2ff0b5c
commit cb0848696d
2 changed files with 19 additions and 15 deletions
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4
lib/Target/X86/X86InstrFMA.td
View File

@ -20,6 +20,7 @@ multiclass fma3p_rm<bits<8> opc, string OpcodeStr,
PatFrag MemFrag128, PatFrag MemFrag256,
ValueType OpVT128, ValueType OpVT256,
SDPatternOperator Op = null_frag> {
let isCommutable = 1 in
def r : FMA3<opc, MRMSrcReg, (outs VR128:$dst),
(ins VR128:$src1, VR128:$src2, VR128:$src3),
!strconcat(OpcodeStr,
@ -35,6 +36,7 @@ multiclass fma3p_rm<bits<8> opc, string OpcodeStr,
[(set VR128:$dst, (OpVT128 (Op VR128:$src2, VR128:$src1,
(MemFrag128 addr:$src3))))]>;
let isCommutable = 1 in
def rY : FMA3<opc, MRMSrcReg, (outs VR256:$dst),
(ins VR256:$src1, VR256:$src2, VR256:$src3),
!strconcat(OpcodeStr,
@ -116,6 +118,7 @@ let Constraints = "$src1 = $dst" in {
multiclass fma3s_rm<bits<8> opc, string OpcodeStr, X86MemOperand x86memop,
RegisterClass RC, ValueType OpVT, PatFrag mem_frag,
SDPatternOperator OpNode = null_frag> {
let isCommutable = 1 in
def r : FMA3<opc, MRMSrcReg, (outs RC:$dst),
(ins RC:$src1, RC:$src2, RC:$src3),
!strconcat(OpcodeStr,
@ -135,6 +138,7 @@ multiclass fma3s_rm<bits<8> opc, string OpcodeStr, X86MemOperand x86memop,
multiclass fma3s_rm_int<bits<8> opc, string OpcodeStr, Operand memop,
ComplexPattern mem_cpat, Intrinsic IntId,
RegisterClass RC> {
let isCommutable = 1 in
def r_Int : FMA3<opc, MRMSrcReg, (outs VR128:$dst),
(ins VR128:$src1, VR128:$src2, VR128:$src3),
!strconcat(OpcodeStr,

30
test/CodeGen/X86/fma_patterns.ll
View File

@ -3,7 +3,7 @@
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=bdver1 -fp-contract=fast | FileCheck %s --check-prefix=CHECK_FMA4
; CHECK: test_x86_fmadd_ps
; CHECK: vfmadd213ps %xmm2, %xmm0, %xmm1
; CHECK: vfmadd213ps %xmm2, %xmm1, %xmm0
; CHECK: ret
; CHECK_FMA4: test_x86_fmadd_ps
; CHECK_FMA4: vfmaddps %xmm2, %xmm1, %xmm0, %xmm0
@ -15,7 +15,7 @@ define <4 x float> @test_x86_fmadd_ps(<4 x float> %a0, <4 x float> %a1, <4 x flo
}
; CHECK: test_x86_fmsub_ps
; CHECK: fmsub213ps %xmm2, %xmm0, %xmm1
; CHECK: fmsub213ps %xmm2, %xmm1, %xmm0
; CHECK: ret
; CHECK_FMA4: test_x86_fmsub_ps
; CHECK_FMA4: vfmsubps %xmm2, %xmm1, %xmm0, %xmm0
@ -27,7 +27,7 @@ define <4 x float> @test_x86_fmsub_ps(<4 x float> %a0, <4 x float> %a1, <4 x flo
}
; CHECK: test_x86_fnmadd_ps
; CHECK: fnmadd213ps %xmm2, %xmm0, %xmm1
; CHECK: fnmadd213ps %xmm2, %xmm1, %xmm0
; CHECK: ret
; CHECK_FMA4: test_x86_fnmadd_ps
; CHECK_FMA4: vfnmaddps %xmm2, %xmm1, %xmm0, %xmm0
@ -39,7 +39,7 @@ define <4 x float> @test_x86_fnmadd_ps(<4 x float> %a0, <4 x float> %a1, <4 x fl
}
; CHECK: test_x86_fnmsub_ps
; CHECK: fnmsub213ps %xmm2, %xmm0, %xmm1
; CHECK: fnmsub213ps %xmm2, %xmm1, %xmm0
; CHECK: ret
; CHECK_FMA4: test_x86_fnmsub_ps
; CHECK_FMA4: fnmsubps %xmm2, %xmm1, %xmm0, %xmm0
@ -52,7 +52,7 @@ define <4 x float> @test_x86_fnmsub_ps(<4 x float> %a0, <4 x float> %a1, <4 x fl
}
; CHECK: test_x86_fmadd_ps_y
; CHECK: vfmadd213ps %ymm2, %ymm0, %ymm1
; CHECK: vfmadd213ps %ymm2, %ymm1, %ymm0
; CHECK: ret
; CHECK_FMA4: test_x86_fmadd_ps_y
; CHECK_FMA4: vfmaddps %ymm2, %ymm1, %ymm0, %ymm0
@ -64,7 +64,7 @@ define <8 x float> @test_x86_fmadd_ps_y(<8 x float> %a0, <8 x float> %a1, <8 x f
}
; CHECK: test_x86_fmsub_ps_y
; CHECK: vfmsub213ps %ymm2, %ymm0, %ymm1
; CHECK: vfmsub213ps %ymm2, %ymm1, %ymm0
; CHECK: ret
; CHECK_FMA4: test_x86_fmsub_ps_y
; CHECK_FMA4: vfmsubps %ymm2, %ymm1, %ymm0, %ymm0
@ -76,7 +76,7 @@ define <8 x float> @test_x86_fmsub_ps_y(<8 x float> %a0, <8 x float> %a1, <8 x f
}
; CHECK: test_x86_fnmadd_ps_y
; CHECK: vfnmadd213ps %ymm2, %ymm0, %ymm1
; CHECK: vfnmadd213ps %ymm2, %ymm1, %ymm0
; CHECK: ret
; CHECK_FMA4: test_x86_fnmadd_ps_y
; CHECK_FMA4: vfnmaddps %ymm2, %ymm1, %ymm0, %ymm0
@ -88,7 +88,7 @@ define <8 x float> @test_x86_fnmadd_ps_y(<8 x float> %a0, <8 x float> %a1, <8 x
}
; CHECK: test_x86_fnmsub_ps_y
; CHECK: vfnmsub213ps %ymm2, %ymm0, %ymm1
; CHECK: vfnmsub213ps %ymm2, %ymm1, %ymm0
; CHECK: ret
define <8 x float> @test_x86_fnmsub_ps_y(<8 x float> %a0, <8 x float> %a1, <8 x float> %a2) {
%x = fmul <8 x float> %a0, %a1
@ -98,7 +98,7 @@ define <8 x float> @test_x86_fnmsub_ps_y(<8 x float> %a0, <8 x float> %a1, <8 x
}
; CHECK: test_x86_fmadd_pd_y
; CHECK: vfmadd213pd %ymm2, %ymm0, %ymm1
; CHECK: vfmadd213pd %ymm2, %ymm1, %ymm0
; CHECK: ret
; CHECK_FMA4: test_x86_fmadd_pd_y
; CHECK_FMA4: vfmaddpd %ymm2, %ymm1, %ymm0, %ymm0
@ -110,7 +110,7 @@ define <4 x double> @test_x86_fmadd_pd_y(<4 x double> %a0, <4 x double> %a1, <4
}
; CHECK: test_x86_fmsub_pd_y
; CHECK: vfmsub213pd %ymm2, %ymm0, %ymm1
; CHECK: vfmsub213pd %ymm2, %ymm1, %ymm0
; CHECK: ret
; CHECK_FMA4: test_x86_fmsub_pd_y
; CHECK_FMA4: vfmsubpd %ymm2, %ymm1, %ymm0, %ymm0
@ -122,7 +122,7 @@ define <4 x double> @test_x86_fmsub_pd_y(<4 x double> %a0, <4 x double> %a1, <4
}
; CHECK: test_x86_fmsub_pd
; CHECK: vfmsub213pd %xmm2, %xmm0, %xmm1
; CHECK: vfmsub213pd %xmm2, %xmm1, %xmm0
; CHECK: ret
; CHECK_FMA4: test_x86_fmsub_pd
; CHECK_FMA4: vfmsubpd %xmm2, %xmm1, %xmm0, %xmm0
@ -134,7 +134,7 @@ define <2 x double> @test_x86_fmsub_pd(<2 x double> %a0, <2 x double> %a1, <2 x
}
; CHECK: test_x86_fnmadd_ss
; CHECK: vfnmadd213ss %xmm2, %xmm0, %xmm1
; CHECK: vfnmadd213ss %xmm2, %xmm1, %xmm0
; CHECK: ret
; CHECK_FMA4: test_x86_fnmadd_ss
; CHECK_FMA4: vfnmaddss %xmm2, %xmm1, %xmm0, %xmm0
@ -146,7 +146,7 @@ define float @test_x86_fnmadd_ss(float %a0, float %a1, float %a2) {
}
; CHECK: test_x86_fnmadd_sd
; CHECK: vfnmadd213sd %xmm2, %xmm0, %xmm1
; CHECK: vfnmadd213sd %xmm2, %xmm1, %xmm0
; CHECK: ret
; CHECK_FMA4: test_x86_fnmadd_sd
; CHECK_FMA4: vfnmaddsd %xmm2, %xmm1, %xmm0, %xmm0
@ -158,7 +158,7 @@ define double @test_x86_fnmadd_sd(double %a0, double %a1, double %a2) {
}
; CHECK: test_x86_fmsub_sd
; CHECK: vfmsub213sd %xmm2, %xmm0, %xmm1
; CHECK: vfmsub213sd %xmm2, %xmm1, %xmm0
; CHECK: ret
; CHECK_FMA4: test_x86_fmsub_sd
; CHECK_FMA4: vfmsubsd %xmm2, %xmm1, %xmm0, %xmm0
@ -170,7 +170,7 @@ define double @test_x86_fmsub_sd(double %a0, double %a1, double %a2) {
}
; CHECK: test_x86_fnmsub_ss
; CHECK: vfnmsub213ss %xmm2, %xmm0, %xmm1
; CHECK: vfnmsub213ss %xmm2, %xmm1, %xmm0
; CHECK: ret
; CHECK_FMA4: test_x86_fnmsub_ss
; CHECK_FMA4: vfnmsubss %xmm2, %xmm1, %xmm0, %xmm0