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| author | Evan Cheng <evan.cheng@apple.com> | 2009-08-03 02:38:06 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-08-03 02:38:06 +0000 |
| commit | a8e8984ee4c197634839cf228f5b1d79a77fa4b9 (patch) | |
| tree | 1f702f13d15c688964d8e2561766104576be4784 /lib/Target/ARM/Thumb2InstrInfo.cpp | |
| parent | e2c74081998af2e64ed498d65cf501704796ccc0 (diff) | |
| download | llvm-a8e8984ee4c197634839cf228f5b1d79a77fa4b9.tar.gz llvm-a8e8984ee4c197634839cf228f5b1d79a77fa4b9.tar.bz2 llvm-a8e8984ee4c197634839cf228f5b1d79a77fa4b9.tar.xz | |
Use the i12 variant of load / store opcodes if offset is zero. Now we pass all of multisource as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77939 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/Thumb2InstrInfo.cpp')
| -rw-r--r-- | lib/Target/ARM/Thumb2InstrInfo.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/Target/ARM/Thumb2InstrInfo.cpp b/lib/Target/ARM/Thumb2InstrInfo.cpp index f56fc2b427..cf2d09912d 100644 --- a/lib/Target/ARM/Thumb2InstrInfo.cpp +++ b/lib/Target/ARM/Thumb2InstrInfo.cpp @@ -421,8 +421,12 @@ int llvm::rewriteT2FrameIndex(MachineInstr &MI, unsigned FrameRegIdx, if (AddrMode == ARMII::AddrMode5) // FIXME: Not consistent. ImmedOffset |= 1 << NumBits; - else + else { ImmedOffset = -ImmedOffset; + if (ImmedOffset == 0) + // Change the opcode back if the encoded offset is zero. + MI.setDesc(TII.get(positiveOffsetOpcode(NewOpc))); + } } ImmOp.ChangeToImmediate(ImmedOffset); Offset &= ~(Mask*Scale); |