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| author | Juergen Ributzka <juergen@apple.com> | 2014-01-24 06:47:57 +0000 |
|---|---|---|
| committer | Juergen Ributzka <juergen@apple.com> | 2014-01-24 06:47:57 +0000 |
| commit | e758ddcd16f701225ac673c5f38e2e04b9d24faa (patch) | |
| tree | e657861491a7d737167b0c6ed7ebc81ae3c06186 /llvm/lib/Target/Sparc | |
| parent | 05ae2d671549d080ec81627299ccd61809355c29 (diff) | |
| download | bcm5719-llvm-e758ddcd16f701225ac673c5f38e2e04b9d24faa.tar.gz bcm5719-llvm-e758ddcd16f701225ac673c5f38e2e04b9d24faa.zip | |
[X86] Prevent the creation of redundant ops for sadd and ssub with overflow.
This commit teaches the X86 backend to create the same X86 instructions when it
lowers an sadd/ssub with overflow intrinsic and a conditional branch that uses
that overflow result. This allows SelectionDAG to recognize and remove one of
the redundant operations.
This fixes <rdar://problem/15874016> and <rdar://problem/15661073>.
Reviewed by Nadav
llvm-svn: 199976
Diffstat (limited to 'llvm/lib/Target/Sparc')
0 files changed, 0 insertions, 0 deletions
