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| author | Evan Cheng <evan.cheng@apple.com> | 2010-09-10 01:29:16 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-09-10 01:29:16 +0000 |
| commit | 0cf9a820e435a74ef93930dcaf8917323f2f99be (patch) | |
| tree | ffcb01b1621bcedb427d701cfaee9ea9a19b0a2c /include/llvm/Target/TargetMachine.h | |
| parent | 3288f13270360d667bf13f6393435cfa4e282c2c (diff) | |
| download | external_llvm-0cf9a820e435a74ef93930dcaf8917323f2f99be.zip external_llvm-0cf9a820e435a74ef93930dcaf8917323f2f99be.tar.gz external_llvm-0cf9a820e435a74ef93930dcaf8917323f2f99be.tar.bz2 | |
Teach if-converter to be more careful with predicating instructions that would
take multiple cycles to decode.
For the current if-converter clients (actually only ARM), the instructions that
are predicated on false are not nops. They would still take machine cycles to
decode. Micro-coded instructions such as LDM / STM can potentially take multiple
cycles to decode. If-converter should take treat them as non-micro-coded
simple instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113570 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Target/TargetMachine.h')
| -rw-r--r-- | include/llvm/Target/TargetMachine.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h index 42e99e0..426338f 100644 --- a/include/llvm/Target/TargetMachine.h +++ b/include/llvm/Target/TargetMachine.h @@ -152,8 +152,8 @@ public: /// getInstrItineraryData - Returns instruction itinerary data for the target /// or specific subtarget. /// - virtual const InstrItineraryData getInstrItineraryData() const { - return InstrItineraryData(); + virtual const InstrItineraryData *getInstrItineraryData() const { + return 0; } /// getELFWriterInfo - If this target supports an ELF writer, return |