2 Commits

Author	SHA1	Message	Date
Matthias Braun	2a033e8287	ScheduleDAGInstrs: Ignore dependencies of constant physregs ... There is no need to track dependencies for constant physregs, as they don't change their value no matter in what order you read/write to them. Differential Revision: https://reviews.llvm.org/D26221 llvm-svn: 286526	2016-11-10 23:46:44 +00:00
Evgeny Astigeevich	4405b74d21	[AArch64][CodeGen] Fix of PR27158: incorrect peephole optimization in AArch64InstrInfo::optimizeCompareInstr ... AArch64InstrInfo::optimizeCompareInstr has bug PR27158 which causes generation of incorrect code. A compare instruction is substituted with another instruction which does not produce the same flags as the original compare instruction. This patch contains: 1. Fix of the bug. 2. A regression test in MIR. 3. A new test to check that SUBS is replaced by SUB. Differential Revision: http://reviews.llvm.org/D18838 llvm-svn: 266969	2016-04-21 08:54:08 +00:00