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Rename VBROADCASTSDrm into VBROADCASTSDYrm to match the naming convention. 

Allow the folding of vbroadcastRR to vbroadcastRM, where the memory operand is a spill slot.

PR12782.

Together with Michael Kuperstein <michael.m.kuperstein@intel.com>

llvm-svn: 160230
This commit is contained in:
Nadav Rotem 2012-07-15 12:26:30 +00:00
parent a62368c965
commit ee3552f88d
3 changed files with 29 additions and 3 deletions
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5
llvm/lib/Target/X86/X86InstrInfo.cpp
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@ -539,6 +539,8 @@ X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
{ X86::VSQRTPSr_Int, X86::VSQRTPSm_Int, TB_ALIGN_16 },
{ X86::VUCOMISDrr, X86::VUCOMISDrm, 0 },
{ X86::VUCOMISSrr, X86::VUCOMISSrm, 0 },
{ X86::VBROADCASTSSrr, X86::VBROADCASTSSrm, TB_NO_REVERSE },
// AVX 256-bit foldable instructions
{ X86::VMOVAPDYrr, X86::VMOVAPDYrm, TB_ALIGN_32 },
{ X86::VMOVAPSYrr, X86::VMOVAPSYrm, TB_ALIGN_32 },
@ -547,6 +549,7 @@ X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
{ X86::VMOVUPSYrr, X86::VMOVUPSYrm, 0 },
{ X86::VPERMILPDYri, X86::VPERMILPDYmi, TB_ALIGN_32 },
{ X86::VPERMILPSYri, X86::VPERMILPSYmi, TB_ALIGN_32 },
// AVX2 foldable instructions
{ X86::VPABSBrr256, X86::VPABSBrm256, TB_ALIGN_32 },
{ X86::VPABSDrr256, X86::VPABSDrm256, TB_ALIGN_32 },
@ -562,6 +565,8 @@ X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
{ X86::VSQRTPDYr_Int, X86::VSQRTPDYm_Int, TB_ALIGN_32 },
{ X86::VSQRTPSYr, X86::VSQRTPSYm, TB_ALIGN_32 },
{ X86::VSQRTPSYr_Int, X86::VSQRTPSYm_Int, TB_ALIGN_32 },
{ X86::VBROADCASTSSYrr, X86::VBROADCASTSSYrm, TB_NO_REVERSE },
{ X86::VBROADCASTSDYrr, X86::VBROADCASTSDYrm, TB_NO_REVERSE },
};
for (unsigned i = 0, e = array_lengthof(OpTbl1); i != e; ++i) {

6
llvm/lib/Target/X86/X86InstrSSE.td
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@ -7274,7 +7274,7 @@ let ExeDomain = SSEPackedSingle in {
int_x86_avx_vbroadcast_ss_256>;
}
let ExeDomain = SSEPackedDouble in
def VBROADCASTSDrm : avx_broadcast<0x19, "vbroadcastsd", VR256, f64mem,
def VBROADCASTSDYrm : avx_broadcast<0x19, "vbroadcastsd", VR256, f64mem,
int_x86_avx_vbroadcast_sd_256>;
def VBROADCASTF128 : avx_broadcast<0x1A, "vbroadcastf128", VR256, f128mem,
int_x86_avx_vbroadcastf128_pd_256>;
@ -7753,11 +7753,11 @@ let Predicates = [HasAVX] in {
def : Pat<(v8i32 (X86VBroadcast (loadi32 addr:$src))),
(VBROADCASTSSYrm addr:$src)>;
def : Pat<(v4i64 (X86VBroadcast (loadi64 addr:$src))),
(VBROADCASTSDrm addr:$src)>;
(VBROADCASTSDYrm addr:$src)>;
def : Pat<(v8f32 (X86VBroadcast (loadf32 addr:$src))),
(VBROADCASTSSYrm addr:$src)>;
def : Pat<(v4f64 (X86VBroadcast (loadf64 addr:$src))),
(VBROADCASTSDrm addr:$src)>;
(VBROADCASTSDYrm addr:$src)>;
def : Pat<(v4f32 (X86VBroadcast (loadf32 addr:$src))),
(VBROADCASTSSrm addr:$src)>;
def : Pat<(v4i32 (X86VBroadcast (loadi32 addr:$src))),

21
llvm/test/CodeGen/X86/2012-07-15-broadcastfold.ll Normal file
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@ -0,0 +1,21 @@
; RUN: llc < %s -march=x86 -mcpu=corei7 -mattr=+avx2 | FileCheck %s
declare x86_fastcallcc i64 @barrier()
;CHECK: bcast_fold
;CHECK: vbroadcastss -24(%ebp), %ymm0 # 16-byte Folded Reload
;CHECK: ret
define <8 x float> @bcast_fold( float* %A) {
BB:
%A0 = load float* %A
%tt3 = call x86_fastcallcc i64 @barrier()
br i1 undef, label %work, label %exit
work:
%A1 = insertelement <8 x float> undef, float %A0, i32 0
%A2 = shufflevector <8 x float> %A1, <8 x float> undef, <8 x i32> <i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0>
ret <8 x float> %A2
exit:
ret <8 x float> undef
}