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[X86] Fix MayLoad/HasSideEffect flag for (V)MOVLPSrm instructions.

Browse Source 
Before revision 336728, the "mayLoad" flag for instruction (V)MOVLPSrm was
inferred directly from the "default" pattern associated with the instruction
definition.

r336728 removed special node X86Movlps, and all the patterns associated to it.
Now instruction (V)MOVLPSrm doesn't have a pattern associated to it, and the
'mayLoad/hasSideEffects' flags are left unset.

When the instruction info is emitted by tablegen, method
CodeGenDAGPatterns::InferInstructionFlags() sees that (V)MOVLPSrm doesn't have a
pattern, and flags are undefined. So, it conservatively sets the
"hasSideEffects" flag for it.

As a consequence, we were losing the 'mayLoad' flag, and we were gaining a
'hasSideEffect' flag in its place.
This patch fixes the issue (originally reported by Michael Holmen).

The mca tests show the differences in the instruction info flags.  Instructions
that were affected by this problem were: MOVLPSrm/VMOVLPSrm/VMOVLPSZ128rm.

Differential Revision: https://reviews.llvm.org/D49182

llvm-svn: 336818
This commit is contained in:
Andrea Di Biagio 2018-07-11 15:27:50 +00:00
parent 1877687068
commit 6b6463f348
20 changed files with 21 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/Target/X86/X86InstrAVX512.td
View File

@ -6385,7 +6385,7 @@ def VMOVHLPSZrr : AVX512PSI<0x12, MRMSrcReg, (outs VR128X:$dst),
multiclass avx512_mov_hilo_packed<bits<8> opc, string OpcodeStr,
SDPatternOperator OpNode,
X86VectorVTInfo _> {
let ExeDomain = _.ExeDomain in
let hasSideEffects = 0, mayLoad = 1, ExeDomain = _.ExeDomain in
def rm : AVX512<opc, MRMSrcMem, (outs _.RC:$dst),
(ins _.RC:$src1, f64mem:$src2),
!strconcat(OpcodeStr,

2
lib/Target/X86/X86InstrSSE.td
View File

@ -630,6 +630,7 @@ let Predicates = [UseSSE1] in {
multiclass sse12_mov_hilo_packed_base<bits<8>opc, SDNode psnode, SDNode pdnode,
string base_opc, string asm_opr> {
let hasSideEffects = 0, mayLoad = 1 in
def PSrm : PI<opc, MRMSrcMem,
(outs VR128:$dst), (ins VR128:$src1, f64mem:$src2),
!strconcat(base_opc, "s", asm_opr),
@ -639,6 +640,7 @@ multiclass sse12_mov_hilo_packed_base<bits<8>opc, SDNode psnode, SDNode pdnode,
SSEPackedSingle>, PS,
Sched<[SchedWriteFShuffle.XMM.Folded, ReadAfterLd]>;
let hasSideEffects = 0, mayLoad = 1 in
def PDrm : PI<opc, MRMSrcMem,
(outs VR128:$dst), (ins VR128:$src1, f64mem:$src2),
!strconcat(base_opc, "d", asm_opr),

2
test/tools/llvm-mca/X86/Atom/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 * movhps %xmm0, (%rax)
# CHECK-NEXT: 1 1 1.00 * movhps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 * movlps %xmm0, (%rax)
# CHECK-NEXT: 1 1 1.00 U movlps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 3 3.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 1 1 1.00 * movntps %xmm0, (%rax)
# CHECK-NEXT: 1 1 1.00 * * U movntq %mm0, (%rax)

2
test/tools/llvm-mca/X86/Broadwell/resources-avx1.s
View File

@ -1281,7 +1281,7 @@ vzeroupper
# CHECK-NEXT: 2 1 1.00 * vmovlpd %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 * vmovlpd (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 1 1.00 * vmovlps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 U vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 6 1.00 * vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 3 1.00 vmovmskpd %xmm0, %ecx
# CHECK-NEXT: 1 3 1.00 vmovmskpd %ymm0, %ecx
# CHECK-NEXT: 1 3 1.00 vmovmskps %xmm0, %ecx

2
test/tools/llvm-mca/X86/Broadwell/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 2 1 1.00 * movhps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 * movhps (%rax), %xmm2
# CHECK-NEXT: 2 1 1.00 * movlps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 U movlps (%rax), %xmm2
# CHECK-NEXT: 2 6 1.00 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 3 1.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 2 1 1.00 * movntps %xmm0, (%rax)
# CHECK-NEXT: 2 1 1.00 * * U movntq %mm0, (%rax)

2
test/tools/llvm-mca/X86/BtVer2/resources-avx1.s
View File

@ -1281,7 +1281,7 @@ vzeroupper
# CHECK-NEXT: 1 2 1.00 * vmovlpd %xmm0, (%rax)
# CHECK-NEXT: 1 6 1.00 * vmovlpd (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 2 1.00 * vmovlps %xmm0, (%rax)
# CHECK-NEXT: 1 6 1.00 U vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 6 1.00 * vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 3 1.00 vmovmskpd %xmm0, %ecx
# CHECK-NEXT: 1 3 1.00 vmovmskpd %ymm0, %ecx
# CHECK-NEXT: 1 3 1.00 vmovmskps %xmm0, %ecx

2
test/tools/llvm-mca/X86/BtVer2/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 1 2 1.00 * movhps %xmm0, (%rax)
# CHECK-NEXT: 1 6 1.00 * movhps (%rax), %xmm2
# CHECK-NEXT: 1 2 1.00 * movlps %xmm0, (%rax)
# CHECK-NEXT: 1 6 1.00 U movlps (%rax), %xmm2
# CHECK-NEXT: 1 6 1.00 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 3 1.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 1 3 1.00 * movntps %xmm0, (%rax)
# CHECK-NEXT: 1 2 1.00 * * U movntq %mm0, (%rax)

2
test/tools/llvm-mca/X86/Generic/resources-avx1.s
View File

@ -1281,7 +1281,7 @@ vzeroupper
# CHECK-NEXT: 1 1 1.00 * vmovlpd %xmm0, (%rax)
# CHECK-NEXT: 2 7 1.00 * vmovlpd (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 1 1.00 * vmovlps %xmm0, (%rax)
# CHECK-NEXT: 2 7 1.00 U vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 7 1.00 * vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 2 1.00 vmovmskpd %xmm0, %ecx
# CHECK-NEXT: 1 2 1.00 vmovmskpd %ymm0, %ecx
# CHECK-NEXT: 1 2 1.00 vmovmskps %xmm0, %ecx

2
test/tools/llvm-mca/X86/Generic/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 * movhps %xmm0, (%rax)
# CHECK-NEXT: 2 7 1.00 * movhps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 * movlps %xmm0, (%rax)
# CHECK-NEXT: 2 7 1.00 U movlps (%rax), %xmm2
# CHECK-NEXT: 2 7 1.00 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 2 1.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 1 1 1.00 * movntps %xmm0, (%rax)
# CHECK-NEXT: 1 1 1.00 * * U movntq %mm0, (%rax)

2
test/tools/llvm-mca/X86/Haswell/resources-avx1.s
View File

@ -1281,7 +1281,7 @@ vzeroupper
# CHECK-NEXT: 2 1 1.00 * vmovlpd %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 * vmovlpd (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 1 1.00 * vmovlps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 U vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 6 1.00 * vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 3 1.00 vmovmskpd %xmm0, %ecx
# CHECK-NEXT: 1 3 1.00 vmovmskpd %ymm0, %ecx
# CHECK-NEXT: 1 3 1.00 vmovmskps %xmm0, %ecx

2
test/tools/llvm-mca/X86/Haswell/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 2 1 1.00 * movhps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 * movhps (%rax), %xmm2
# CHECK-NEXT: 2 1 1.00 * movlps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 U movlps (%rax), %xmm2
# CHECK-NEXT: 2 6 1.00 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 3 1.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 2 1 1.00 * movntps %xmm0, (%rax)
# CHECK-NEXT: 2 1 1.00 * * U movntq %mm0, (%rax)

2
test/tools/llvm-mca/X86/SLM/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 * movhps %xmm0, (%rax)
# CHECK-NEXT: 1 4 1.00 * movhps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 * movlps %xmm0, (%rax)
# CHECK-NEXT: 1 4 1.00 U movlps (%rax), %xmm2
# CHECK-NEXT: 1 4 1.00 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 4 1.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 1 1 1.00 * movntps %xmm0, (%rax)
# CHECK-NEXT: 1 1 1.00 * * U movntq %mm0, (%rax)

2
test/tools/llvm-mca/X86/SandyBridge/resources-avx1.s
View File

@ -1281,7 +1281,7 @@ vzeroupper
# CHECK-NEXT: 1 1 1.00 * vmovlpd %xmm0, (%rax)
# CHECK-NEXT: 2 7 1.00 * vmovlpd (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 1 1.00 * vmovlps %xmm0, (%rax)
# CHECK-NEXT: 2 7 1.00 U vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 7 1.00 * vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 2 1.00 vmovmskpd %xmm0, %ecx
# CHECK-NEXT: 1 2 1.00 vmovmskpd %ymm0, %ecx
# CHECK-NEXT: 1 2 1.00 vmovmskps %xmm0, %ecx

2
test/tools/llvm-mca/X86/SandyBridge/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 * movhps %xmm0, (%rax)
# CHECK-NEXT: 2 7 1.00 * movhps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 * movlps %xmm0, (%rax)
# CHECK-NEXT: 2 7 1.00 U movlps (%rax), %xmm2
# CHECK-NEXT: 2 7 1.00 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 2 1.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 1 1 1.00 * movntps %xmm0, (%rax)
# CHECK-NEXT: 1 1 1.00 * * U movntq %mm0, (%rax)

2
test/tools/llvm-mca/X86/SkylakeClient/resources-avx1.s
View File

@ -1281,7 +1281,7 @@ vzeroupper
# CHECK-NEXT: 2 1 1.00 * vmovlpd %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 * vmovlpd (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 1 1.00 * vmovlps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 U vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 6 1.00 * vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 2 1.00 vmovmskpd %xmm0, %ecx
# CHECK-NEXT: 1 2 1.00 vmovmskpd %ymm0, %ecx
# CHECK-NEXT: 1 2 1.00 vmovmskps %xmm0, %ecx

2
test/tools/llvm-mca/X86/SkylakeClient/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 2 1 1.00 * movhps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 * movhps (%rax), %xmm2
# CHECK-NEXT: 2 1 1.00 * movlps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 U movlps (%rax), %xmm2
# CHECK-NEXT: 2 6 1.00 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 2 1.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 2 1 1.00 * movntps %xmm0, (%rax)
# CHECK-NEXT: 2 1 1.00 * * U movntq %mm0, (%rax)

2
test/tools/llvm-mca/X86/SkylakeServer/resources-avx1.s
View File

@ -1281,7 +1281,7 @@ vzeroupper
# CHECK-NEXT: 2 1 1.00 * vmovlpd %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 * vmovlpd (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 1 1.00 * vmovlps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 U vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 2 6 1.00 * vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 2 1.00 vmovmskpd %xmm0, %ecx
# CHECK-NEXT: 1 2 1.00 vmovmskpd %ymm0, %ecx
# CHECK-NEXT: 1 2 1.00 vmovmskps %xmm0, %ecx

2
test/tools/llvm-mca/X86/SkylakeServer/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 2 1 1.00 * movhps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 * movhps (%rax), %xmm2
# CHECK-NEXT: 2 1 1.00 * movlps %xmm0, (%rax)
# CHECK-NEXT: 2 6 1.00 U movlps (%rax), %xmm2
# CHECK-NEXT: 2 6 1.00 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 2 1.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 2 1 1.00 * movntps %xmm0, (%rax)
# CHECK-NEXT: 2 1 1.00 * * U movntq %mm0, (%rax)

2
test/tools/llvm-mca/X86/Znver1/resources-avx1.s
View File

@ -1281,7 +1281,7 @@ vzeroupper
# CHECK-NEXT: 1 1 0.50 * vmovlpd %xmm0, (%rax)
# CHECK-NEXT: 1 8 0.50 * vmovlpd (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 1 0.50 * vmovlps %xmm0, (%rax)
# CHECK-NEXT: 1 8 0.50 U vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 8 0.50 * vmovlps (%rax), %xmm1, %xmm2
# CHECK-NEXT: 1 1 1.00 vmovmskpd %xmm0, %ecx
# CHECK-NEXT: 1 1 1.00 vmovmskpd %ymm0, %ecx
# CHECK-NEXT: 1 1 1.00 vmovmskps %xmm0, %ecx

2
test/tools/llvm-mca/X86/Znver1/resources-sse1.s
View File

@ -248,7 +248,7 @@ xorps (%rax), %xmm2
# CHECK-NEXT: 1 1 0.50 * movhps %xmm0, (%rax)
# CHECK-NEXT: 1 8 0.50 * movhps (%rax), %xmm2
# CHECK-NEXT: 1 1 0.50 * movlps %xmm0, (%rax)
# CHECK-NEXT: 1 8 0.50 U movlps (%rax), %xmm2
# CHECK-NEXT: 1 8 0.50 * movlps (%rax), %xmm2
# CHECK-NEXT: 1 1 1.00 movmskps %xmm0, %ecx
# CHECK-NEXT: 1 1 0.50 * movntps %xmm0, (%rax)
# CHECK-NEXT: 1 1 0.50 * * U movntq %mm0, (%rax)