llvm-project

Commit Graph

Author	SHA1	Message	Date
Matthias Braun	f29b12dca8	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	fd89fe0dd3	[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

Author

SHA1

Message

Date

Matthias Braun

f29b12dca8

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

fd89fe0dd3

[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

2 Commits