Commit Graph

7 Commits

Author SHA1 Message Date
Sanjay Patel 7336e7c67a [x86] limit transform for select-of-fp-constants
This should likely be adjusted to limit this transform
further, but these diffs should be clear wins.

If we have blendv/conditional move, then we should assume 
those are cheap ops. The loads become independent of the
compare, so those can be speculated before we need to use 
the values in the blend/mov.

llvm-svn: 347526
2018-11-25 17:27:02 +00:00
Sanjay Patel 78e2b901e5 [x86] add tests for select-of-FP-constants; NFC
llvm-svn: 347406
2018-11-21 19:14:38 +00:00
Sanjay Patel cadf62f360 [x86] fix predicate for avoiding vblendv
It only makes sense to produce the logic ops when 1 of the
constants is +0.0. Otherwise, go with vblendv to reduce code.

llvm-svn: 347403
2018-11-21 18:02:50 +00:00
Sanjay Patel 5ba384347c [x86] add test for FP select with constant; NFC
llvm-svn: 347401
2018-11-21 17:47:18 +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 00161c9961 [X86][SSE] Improve support for vselect(Cond, 0, X) -> ANDN(Cond, X)
As discussed on PR28925 and D37849.

Differential Revision: https://reviews.llvm.org/D37975

llvm-svn: 313532
2017-09-18 14:23:23 +00:00
Simon Pilgrim 360629d170 [X86][SSE] Add vselect with zero tests (PR28925)
llvm-svn: 313529
2017-09-18 13:32:33 +00:00