bcm5719-llvm - Project Ortega BCM5719 LLVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	[InstCombine] remove identity shuffle simplification for mask with undefs	Sanjay Patel	2019-11-24	1	-3/+6
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	And simultaneously enhance SimplifyDemandedVectorElts() to rcognize that pattern. That preserves some of the old optimizations in IR. Given a shuffle that includes undef elements in an otherwise identity mask like: define <4 x float> @shuffle(<4 x float> %arg) { %shuf = shufflevector <4 x float> %arg, <4 x float> undef, <4 x i32> <i32 undef, i32 1, i32 2, i32 3> ret <4 x float> %shuf } We were simplifying that to the input operand. But as discussed in PR43958: https://bugs.llvm.org/show_bug.cgi?id=43958 ...that means that per-vector-element poison that would be stopped by the shuffle can now leak to the result. Also note that we still have (and there are tests for) the same transform with no undef elements in the mask (a fully-defined identity mask). I don't think there's any controversy about that case - it's a valid transform under any interpretation of shufflevector/undef/poison. Looking at a few of the diffs into codegen, I don't see any difference in final asm. So depending on your perspective, that's good (no real loss of optimization power) or bad (poison exists in the DAG, so we only partially fixed the bug). Differential Revision: https://reviews.llvm.org/D70246
*	[InstCombine][X86] Add PACKSS tests for truncation of sign-extended comparisons	Simon Pilgrim	2019-04-29	1	-0/+106
\| \| \| \|	llvm-svn: 359435
*	[InstCombine][X86] Add PACKSS/PACKUS tests for truncation where saturation ↵	Simon Pilgrim	2019-04-25	1	-0/+160
\| \| \| \| \| \|	won't occur llvm-svn: 359185
*	Revert "Temporarily Revert "Add basic loop fusion pass.""	Eric Christopher	2019-04-17	1	-0/+366
\| \| \| \| \| \| \| \|	The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
*	Temporarily Revert "Add basic loop fusion pass."	Eric Christopher	2019-04-17	1	-366/+0
\| \| \| \| \| \| \| \|	As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
*	InstCombine: Move tests that use target intrinsics into subdirectories	Justin Bogner	2017-05-13	1	-0/+366
	Tests with target intrinsics are inherently target specific, so it doesn't actually make sense to run them if we've excluded their target. llvm-svn: 302979