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17 Commits

Author SHA1 Message Date
Simon Pilgrim d7518896ff [X86][SSE] Fix domains for VZEXT_LOAD type instructions 
Add the missing domain equivalences for movss, movsd, movd and movq zero extending loading instructions.

Differential Revision: https://reviews.llvm.org/D27684

llvm-svn: 289825
 2016-12-15 16:05:29 +00:00
Craig Topper cada9f2275 [AVX-512] Add support for commuting VPERMT2(B/W/D/Q/PS/PD) to/from VPERMI2(B/W/D/Q/PS/PD). 
Summary:
The index and one of the table operands can be swapped by changing the opcode to the other version. Neither of these operands are the one that can load from memory so this can't be used to increase memory folding opportunities.

We need to handle the unmasked forms and the kz forms. Since the load operand isn't being commuted we can commute the load and broadcast instructions too.

Reviewers: igorb, delena, Ayal, Farhana, RKSimon

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D25652

llvm-svn: 287621
 2016-11-22 04:57:34 +00:00
Craig Topper 4729fe8bb6 [AVX-512] Correct execution domain for VPERMT2PS and VPERMI2PS. 
llvm-svn: 284328
 2016-10-16 04:54:31 +00:00
Craig Topper c48c029610 [AVX-512] Fix duplicate column in AVX512 execution dependency table that was preventing VMOVDQU32/VMOVDQA32 from being recognized. Fix a bug in the code that stops execution dependency fix from turning operations on 32-bit integer element types into operations on 64-bit integer element types. 
llvm-svn: 277327
 2016-08-01 07:55:33 +00:00
Craig Topper f4151bea72 [AVX512] Add initial support for the Execution Domain fixing pass to change some EVEX instructions. 
llvm-svn: 276393
 2016-07-22 05:00:52 +00:00
Craig Topper a1041ff001 [AVX512] Add an AddedComplexity line to the 512-bit insert_subvector undef index 0 patterns. This gives them higher priority than the memory patterns. This matches AVX1/2. 
llvm-svn: 270355
 2016-05-22 07:40:40 +00:00
Matt Arsenault 629d12de70 DAGCombiner: Relax alignment restriction when changing load type 
If the target allows the alignment, this should still be OK.

llvm-svn: 267209
 2016-04-22 20:21:36 +00:00
Simon Pilgrim 0110890a79 [X86][SSE] Added tests to ensure that consecutive loads including any/all volatiles are not combined 
llvm-svn: 264225
 2016-03-24 00:14:37 +00:00
Simon Pilgrim e9093adae0 [X86][AVX] Add shuffle masking support for EltsFromConsecutiveLoads 
Add support for the case where we have a consecutive load (which must include the first + last elements) with a mixture of undef/zero elements. We load the vector and then apply a shuffle to clear the zero'd elements.

Differential Revision: http://reviews.llvm.org/D17297

llvm-svn: 261490
 2016-02-21 19:15:48 +00:00
Simon Pilgrim 7823fd2535 [X86][SSE] Select domain for 32/64-bit partial loads for EltsFromConsecutiveLoads 
Choose between MOVD/MOVSS and MOVQ/MOVSD depending on the target vector type.

This has a lot fewer test changes than trying to add this to X86InstrInfo::setExecutionDomain.....

llvm-svn: 259816
 2016-02-04 19:27:51 +00:00
Simon Pilgrim 6788f33cf2 [X86][SSE] Add general 32-bit LOAD + VZEXT_MOVL support to EltsFromConsecutiveLoads 
This patch adds support for consecutive (load/undef elements) 32-bit loads, followed by trailing undef/zero elements to be combined to a single MOVD load.

Differential Revision: http://reviews.llvm.org/D16729

llvm-svn: 259796
 2016-02-04 16:12:56 +00:00
Simon Pilgrim 528e94e9a2 [X86][SSE] Added i686 target tests to make sure we are correctly loading consecutive entries as 64-bit integers 
llvm-svn: 259794
 2016-02-04 15:51:55 +00:00
Simon Pilgrim 18bcf93efb [X86][AVX] Add support for 64-bit VZEXT_LOAD of 256/512-bit vectors to EltsFromConsecutiveLoads 
Follow up to D16217 and D16729

This change uncovered an odd pattern where VZEXT_LOAD v4i64 was being lowered to a load of the lower v2i64 (so the 2nd i64 destination element wasn't being zeroed), I can't find any use/reason for this and have removed the pattern and replaced it so only the 1st i64 element is loaded and the upper bits all zeroed. This matches the description for X86ISD::VZEXT_LOAD

Differential Revision: http://reviews.llvm.org/D16768

llvm-svn: 259635
 2016-02-03 09:41:59 +00:00
Simon Pilgrim 96fe4ef5f7 [X86][AVX512] Add support for AVX512 VMOVQ (load) shuffle decoding 
llvm-svn: 259496
 2016-02-02 13:32:56 +00:00
Simon Pilgrim 5be17b6e3e [X86][AVX512] Add support for AVX512 VMOVD (load) shuffle decoding 
llvm-svn: 259430
 2016-02-01 23:04:05 +00:00
Simon Pilgrim f5c23ad3d7 [X86][AVX512] Add support for AVX512 VMOVSD/VMOVSS shuffle decoding 
llvm-svn: 259427
 2016-02-01 22:26:28 +00:00
Simon Pilgrim 068e38f7f4 [X86][SSE] Add AVX512 merge consecutive load tests 
Add AVX512F/AVX512BW 512-bit tests.

Add AVX512F tests to existing 128/256-bit tests.

llvm-svn: 259410
 2016-02-01 21:30:50 +00:00