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3 Commits

Author SHA1 Message Date
David Bolvansky e80fcf0340 [SimplifyLibCalls] Mark known arguments with nonnull 
Reviewers: efriedma, jdoerfert

Reviewed By: jdoerfert

Subscribers: ychen, rsmith, joerg, aaron.ballman, lebedev.ri, uenoku, jdoerfert, hfinkel, javed.absar, spatel, dmgreen, llvm-commits

Differential Revision: https://reviews.llvm.org/D53342

llvm-svn: 372091
 2019-09-17 09:32:52 +00:00
David Bolvansky ff0ad3c43d [InstCombine] mempcpy(d,s,n) to memcpy(d,s,n) + n 
Summary:
Back-end currently expands mempcpy, but middle-end should work with memcpy instead of mempcpy to enable more memcpy-optimization.

GCC backend emits mempcpy, so LLVM backend could form it too, if we know mempcpy libcall is better than memcpy + n.
https://godbolt.org/z/dOCG96

Reviewers: efriedma, spatel, craig.topper, RKSimon, jdoerfert

Reviewed By: efriedma

Subscribers: hjl.tools, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D65737

llvm-svn: 370593
 2019-08-31 18:19:05 +00:00
David Bolvansky e834e306cb [InstCombine] Added mempcpy tests [NFC] 
llvm-svn: 367825
 2019-08-05 09:58:32 +00:00