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6 Commits

Author SHA1 Message Date
Sanjay Patel 2204520e49 [PatternMatch] define m_FNeg using m_FSub 
Using cstfp_pred_ty in the definition allows us to match vectors with undef elements.

This replicates the change for m_Not from D44076 / rL326823 and continues
towards making all pattern matchers allow undef elements in vectors.

llvm-svn: 329303
 2018-04-05 15:36:55 +00:00
Sanjay Patel 2eaa2a43f8 [InstCombine] add vector and vector undef tests for FP folds; NFC 
llvm-svn: 329294
 2018-04-05 15:07:35 +00:00
Simon Pilgrim 5f022d278b [InstCombine] Regenerate FMUL/FMA combine tests with update_test_checks.py 
llvm-svn: 320922
 2017-12-16 17:18:15 +00:00
Matt Arsenault 920576042d InstCombine: Canonicalize fast fmuladd to fmul + fadd 
llvm-svn: 295353
 2017-02-16 18:46:24 +00:00
Matt Arsenault b264c94963 InstCombine: Add fma with constant transforms 
DAGCombine already does these.

llvm-svn: 290860
 2017-01-03 04:32:35 +00:00
Matt Arsenault 1cc294c85d InstCombine: Add fma + fabs/fneg transforms 
fma (fneg x), (fneg y), z -> fma x, y, z
fma (fabs x), (fabs x), z -> fma x, x, z

llvm-svn: 290859
 2017-01-03 04:32:31 +00:00