Commit Graph

12 Commits

Author SHA1 Message Date
Sanjay Patel b7e13938a9 [x86] consolidate and add tests for undef binop folds; NFC
As was already shown in the div/rem tests and noted in PR36305,
the behavior is inconsistent, but it's not limited to div/rem only.

llvm-svn: 324678
2018-02-08 23:21:44 +00:00
Simon Pilgrim ab84a9a65d [X86] Add srem/udiv/urem by one combine tests
llvm-svn: 321826
2018-01-04 22:08:36 +00:00
Simon Pilgrim e7c06423c1 [X86] Add scalar undef sdiv/srem/udiv/urem combine tests
llvm-svn: 321823
2018-01-04 21:33:19 +00:00
Simon Pilgrim 208fab193b [X86] Add common CHECK prefix for tests without SSE/AVX codegen
llvm-svn: 321810
2018-01-04 18:23:46 +00:00
Simon Pilgrim 5643b40d91 [X86] Show missed combine for X/X for SDIV/UDIV and X%X for SREM/UREM
llvm-svn: 321807
2018-01-04 18:20:46 +00:00
Francis Visoiu Mistrih 25528d6de7 [CodeGen] Unify MBB reference format in both MIR and debug output
As part of the unification of the debug format and the MIR format, print
MBB references as '%bb.5'.

The MIR printer prints the IR name of a MBB only for block definitions.

* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g'
* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g'
* find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g'
* grep -nr 'BB#' and fix

Differential Revision: https://reviews.llvm.org/D40422

llvm-svn: 319665
2017-12-04 17:18:51 +00:00
Simon Pilgrim 77ce072f6b [X86][AVX] Regenerate combine tests with constant broadcast comments
llvm-svn: 308128
2017-07-16 11:36:11 +00:00
Simon Pilgrim ab0446332e [SelectionDAG] Recognise splat vector isKnownToBeAPowerOfTwo one/sign bit shift cases.
llvm-svn: 301303
2017-04-25 12:29:07 +00:00
Simon Pilgrim 05ab8ffc7e [DAGCombiner] Try to use SelectionDAG::isKnownToBeAPowerOfTwo instead of just APInt::isPowerOf2
Generalize sdiv/udiv/srem/urem combines using APInt::isPowerOf2, which only works for const/splat-const values, to call SelectionDAG::isKnownToBeAPowerOfTwo instead which recognises many more cases.

Added a DAGCombiner::BuildLogBase2 helper since PowerOf2 combines often involve taking the log2 of such a value.

Differential Revision: https://reviews.llvm.org/D27714

llvm-svn: 289654
2016-12-14 15:08:13 +00:00
Simon Pilgrim ebe58191c8 [X86][SSE] Add AVX1 tests to sdiv/udiv srem/urem combine tests
As requested on D27714

llvm-svn: 289652
2016-12-14 14:39:51 +00:00
Simon Pilgrim 25e9628978 [DAGCombiner] Add splatted vector support to (udiv x, (shl pow2, y)) -> x >>u (log2(pow2)+y)
llvm-svn: 284491
2016-10-18 16:36:00 +00:00
Simon Pilgrim aeb764a7b7 [X86][SSE] Added vector udiv combine tests
llvm-svn: 281842
2016-09-17 22:02:23 +00:00