RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-02-01 05:01:59 +01:00
Code Issues Projects Releases Wiki Activity

[X86][AVX] Improve (i8 bitcast (v8i1 x)) handling for 256-bit vector compare results.

Browse Source 
As commented on D37849, AVX1 targets were missing a chance to use vmovmskps for v8f32/v8i32 results for bool vector bitcasts

llvm-svn: 313547
This commit is contained in:
Simon Pilgrim 2017-09-18 17:58:31 +00:00
parent f733cdf743
commit f48c836d10
2 changed files with 10 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/Target/X86/X86ISelLowering.cpp
View File

@ -29392,7 +29392,7 @@ static SDValue combineBitcastvxi1(SelectionDAG &DAG, SDValue BitCast,
// the compare.
if (N0->getOpcode() == ISD::SETCC &&
N0->getOperand(0)->getValueType(0).is256BitVector() &&
Subtarget.hasInt256()) {
Subtarget.hasAVX()) {
SExtVT = MVT::v8i32;
FPCastVT = MVT::v8f32;
}

30
test/CodeGen/X86/bitcast-setcc-256.ll
View File

@ -77,9 +77,8 @@ define i8 @v8i32(<8 x i32> %a, <8 x i32> %b) {
; AVX1-NEXT: vextractf128 $1, %ymm0, %xmm3
; AVX1-NEXT: vpcmpgtd %xmm2, %xmm3, %xmm2
; AVX1-NEXT: vpcmpgtd %xmm1, %xmm0, %xmm0
; AVX1-NEXT: vpacksswb %xmm2, %xmm0, %xmm0
; AVX1-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
; AVX1-NEXT: vpmovmskb %xmm0, %eax
; AVX1-NEXT: vinsertf128 $1, %xmm2, %ymm0, %ymm0
; AVX1-NEXT: vmovmskps %ymm0, %eax
; AVX1-NEXT: # kill: %AL<def> %AL<kill> %EAX<kill>
; AVX1-NEXT: vzeroupper
; AVX1-NEXT: retq
@ -126,24 +125,13 @@ define i8 @v8f32(<8 x float> %a, <8 x float> %b) {
; SSSE3-NEXT: # kill: %AL<def> %AL<kill> %EAX<kill>
; SSSE3-NEXT: retq
;
; AVX1-LABEL: v8f32:
; AVX1: # BB#0:
; AVX1-NEXT: vcmpltps %ymm0, %ymm1, %ymm0
; AVX1-NEXT: vextractf128 $1, %ymm0, %xmm1
; AVX1-NEXT: vpacksswb %xmm1, %xmm0, %xmm0
; AVX1-NEXT: vpshufb {{.*#+}} xmm0 = xmm0[0,2,4,6,8,10,12,14,u,u,u,u,u,u,u,u]
; AVX1-NEXT: vpmovmskb %xmm0, %eax
; AVX1-NEXT: # kill: %AL<def> %AL<kill> %EAX<kill>
; AVX1-NEXT: vzeroupper
; AVX1-NEXT: retq
;
; AVX2-LABEL: v8f32:
; AVX2: # BB#0:
; AVX2-NEXT: vcmpltps %ymm0, %ymm1, %ymm0
; AVX2-NEXT: vmovmskps %ymm0, %eax
; AVX2-NEXT: # kill: %AL<def> %AL<kill> %EAX<kill>
; AVX2-NEXT: vzeroupper
; AVX2-NEXT: retq
; AVX12-LABEL: v8f32:
; AVX12: # BB#0:
; AVX12-NEXT: vcmpltps %ymm0, %ymm1, %ymm0
; AVX12-NEXT: vmovmskps %ymm0, %eax
; AVX12-NEXT: # kill: %AL<def> %AL<kill> %EAX<kill>
; AVX12-NEXT: vzeroupper
; AVX12-NEXT: retq
;
; AVX512-LABEL: v8f32:
; AVX512: # BB#0: