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| author | Evan Cheng <evan.cheng@apple.com> | 2009-06-19 07:06:07 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-06-19 07:06:07 +0000 |
| commit | b1019480b6806c38432ad3357ae7d756573c0835 (patch) | |
| tree | 888acc536652c6e802ec406631df48deaab8aa5c /lib/Target | |
| parent | 7e2242be71bc44ab1447b5211b3c0f1cec94c467 (diff) | |
| download | external_llvm-b1019480b6806c38432ad3357ae7d756573c0835.zip external_llvm-b1019480b6806c38432ad3357ae7d756573c0835.tar.gz external_llvm-b1019480b6806c38432ad3357ae7d756573c0835.tar.bz2 | |
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73761 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/ARM/ARMISelLowering.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp index 345f172..2443625 100644 --- a/lib/Target/ARM/ARMISelLowering.cpp +++ b/lib/Target/ARM/ARMISelLowering.cpp @@ -294,6 +294,10 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM) if (!Subtarget->isThumb()) { // Use branch latency information to determine if-conversion limits. + // FIXME: If-converter should use instruction latency of the branch being + // eliminated to compute the threshold. For ARMv6, the branch "latency" + // varies depending on whether it's dynamically or statically predicted + // and on whether the destination is in the prefetch buffer. const TargetInstrInfo *TII = getTargetMachine().getInstrInfo(); const InstrItineraryData &InstrItins = Subtarget->getInstrItineraryData(); unsigned Latency= InstrItins.getLatency(TII->get(ARM::Bcc).getSchedClass()); |