5 Commits

Author	SHA1	Message	Date
Nirav Dave	154874adc5	[DAGCombiner] If a TokenFactor would be merged into its user, consider the user later. ... Summary: A number of optimizations are inhibited by single-use TokenFactors not being merged into the TokenFactor using it. This makes we consider if we can do the merge immediately. Most tests changes here are due to the change in visitation causing minor reorderings and associated reassociation of paired memory operations. CodeGen tests with non-reordering changes: X86/aligned-variadic.ll -- memory-based add folded into stored leaq value. X86/constant-combiners.ll -- Optimizes out overlap between stores. X86/pr40631_deadstore_elision -- folds constant byte store into preceding quad word constant store. Reviewers: RKSimon, craig.topper, spatel, efriedma, courbet Reviewed By: courbet Subscribers: dylanmckay, sdardis, nemanjai, jvesely, nhaehnle, javed.absar, eraman, hiraditya, kbarton, jrtc27, atanasyan, jsji, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59260 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356068 91177308-0d34-0410-b5e6-96231b3b80d8	2019-03-13 17:07:09 +00:00
Jonas Paulsson	ae31e8edc8	[XCore] Return true in enableMultipleCopyHints(). ... Enable multiple COPY hints to eliminate more COPYs during register allocation. Note that this is something all targets should do, see https://reviews.llvm.org/D38128. Review: Robert Lytton git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@326069 91177308-0d34-0410-b5e6-96231b3b80d8	2018-02-26 08:03:32 +00:00
Richard Osborne	c26292d4dc	[XCore] Target optimized library function __memcpy_4() ... Summary: If the src, dst and size of a memcpy are known to be 4 byte aligned we can call __memcpy_4() instead of memcpy(). Reviewers: robertlytton Reviewed By: robertlytton CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D2871 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202395 91177308-0d34-0410-b5e6-96231b3b80d8	2014-02-27 13:39:07 +00:00
Robert Lytton	47a4349eb6	XCore target: fix bug in aligning 'byval i8*' on the stack ... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194466 91177308-0d34-0410-b5e6-96231b3b80d8	2013-11-12 10:11:35 +00:00
Robert Lytton	f2617291e3	XCore target: Add byval handling ... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187563 91177308-0d34-0410-b5e6-96231b3b80d8	2013-08-01 08:18:55 +00:00