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4 Commits

Author SHA1 Message Date
Simon Pilgrim adca820927 [TTI] Add generic SADDSAT/SSUBSAT costs 
Add generic costs calculation for SADDSAT/SSUBSAT intrinsics, this uses generic costs for sadd_with_overflow/ssub_with_overflow, an extra sign comparison + a selects based on the sign/overflow.

This completes PR40316

Differential Revision: https://reviews.llvm.org/D57239

llvm-svn: 352315
 2019-01-27 13:51:59 +00:00
Simon Pilgrim 4e38b8f8bd [SLP][X86] Split prefer-256-bit 'AVX256BW' tests from AVX2 checks 
Fixes SLP test issue with D56636

llvm-svn: 351199
 2019-01-15 16:13:37 +00:00
Simon Pilgrim c2aadfaaad [SLPVectorizer] Flag ADD/SUB SSAT/USAT intrinsics trivially vectorizable (PR40123) 
Enables SLP vectorization for the SSE2 PADDS/PADDUS/PSUBS/PSUBUS style intrinsics

llvm-svn: 350300
 2019-01-03 12:18:23 +00:00
Simon Pilgrim c5e22b29e4 [SLPVectorizer][X86] Add ADD/SUB SSAT/USAT tests (PR40123) 
llvm-svn: 350297
 2019-01-03 12:02:14 +00:00