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| author | Evan Cheng <evan.cheng@apple.com> | 2008-09-11 06:25:25 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-09-11 06:25:25 +0000 |
| commit | dd595c5998214c6ee07ed46f5db551b2abbfbbb3 (patch) | |
| tree | 23c30e2b14eca5921554609450a55b6b67939082 /include/llvm | |
| parent | 3885578a36072dd55c3381b99d4a88299dddbfa3 (diff) | |
| download | llvm-dd595c5998214c6ee07ed46f5db551b2abbfbbb3.tar.gz llvm-dd595c5998214c6ee07ed46f5db551b2abbfbbb3.tar.bz2 llvm-dd595c5998214c6ee07ed46f5db551b2abbfbbb3.tar.xz | |
Change getSubReg semantics. It now returns zero if the specified register doesn't have a subreg of the specified index.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56099 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm')
| -rw-r--r-- | include/llvm/Target/TargetRegisterInfo.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/llvm/Target/TargetRegisterInfo.h b/include/llvm/Target/TargetRegisterInfo.h index 6b460547e4..8d9b7a43d1 100644 --- a/include/llvm/Target/TargetRegisterInfo.h +++ b/include/llvm/Target/TargetRegisterInfo.h @@ -457,7 +457,8 @@ public: virtual BitVector getReservedRegs(const MachineFunction &MF) const = 0; /// getSubReg - Returns the physical register number of sub-register "Index" - /// for physical register RegNo. + /// for physical register RegNo. Return zero if the sub-register does not + /// exist. virtual unsigned getSubReg(unsigned RegNo, unsigned Index) const = 0; //===--------------------------------------------------------------------===// |