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| author | Hal Finkel <hfinkel@anl.gov> | 2013-04-12 18:17:38 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-04-12 18:17:38 +0000 |
| commit | 2277196f6465cc3036090572ac5df7487053e4df (patch) | |
| tree | b3b83ca5d40b799d504ffcab0acb28653b583ba9 /llvm/lib | |
| parent | 35005f768e4a0b8d9c890e960a492e73b5fbc5ad (diff) | |
| download | bcm5719-llvm-2277196f6465cc3036090572ac5df7487053e4df.tar.gz bcm5719-llvm-2277196f6465cc3036090572ac5df7487053e4df.zip | |
Add a comment about the PPC Interpretation64Bit bit
llvm-svn: 179391
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCInstrFormats.td | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCInstrFormats.td b/llvm/lib/Target/PowerPC/PPCInstrFormats.td index 37e26726f76..36f193be993 100644 --- a/llvm/lib/Target/PowerPC/PPCInstrFormats.td +++ b/llvm/lib/Target/PowerPC/PPCInstrFormats.td @@ -38,6 +38,11 @@ class I<bits<6> opcode, dag OOL, dag IOL, string asmstr, InstrItinClass itin> // Fields used for relation models. string BaseName = ""; + + // For cases where multiple instruction definitions really represent the + // same underlying instruction but with one definition for 64-bit arguments + // and one for 32-bit arguments, this bit breaks the degeneracy between + // the two forms and allows TableGen to generate mapping tables. bit Interpretation64Bit = 0; } |
