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| author | Hal Finkel <hfinkel@anl.gov> | 2012-06-08 15:38:21 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2012-06-08 15:38:21 +0000 |
| commit | 99f823f94374917174f96a7689955b8463db6816 (patch) | |
| tree | b9e21d1fb7674ec9e130e22ece338dccfc24ddd2 /lib/Target/PowerPC/PPCInstrInfo.td | |
| parent | 69938a85bdbeef1c5b60aa778e361586bec36fb7 (diff) | |
| download | external_llvm-99f823f94374917174f96a7689955b8463db6816.zip external_llvm-99f823f94374917174f96a7689955b8463db6816.tar.gz external_llvm-99f823f94374917174f96a7689955b8463db6816.tar.bz2 | |
Add the PPCCTRLoops pass: a PPC machine-code-level optimization pass to form CTR-based loop branching code.
This pass is derived from the Hexagon HardwareLoops pass. The only significant enhancement over the Hexagon
pass is that PPCCTRLoops will also attempt to delete the replaced add and compare operations if they are
no longer otherwise used. Also, invalid preheader DebugLoc is not used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158204 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PPCInstrInfo.td')
| -rw-r--r-- | lib/Target/PowerPC/PPCInstrInfo.td | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCInstrInfo.td b/lib/Target/PowerPC/PPCInstrInfo.td index d251242..f75f4e5 100644 --- a/lib/Target/PowerPC/PPCInstrInfo.td +++ b/lib/Target/PowerPC/PPCInstrInfo.td @@ -438,6 +438,13 @@ let isBranch = 1, isTerminator = 1, hasCtrlDep = 1, PPC970_Unit = 7 in { def BCC : BForm<16, 0, 0, (outs), (ins pred:$cond, condbrtarget:$dst), "b${cond:cc} ${cond:reg}, $dst" /*[(PPCcondbranch CRRC:$crS, imm:$opc, bb:$dst)]*/>; + + let Defs = [CTR], Uses = [CTR] in { + def BDZ : IForm_ext<16, 18, 0, 0, (outs), (ins condbrtarget:$dst), + "bdz $dst", BrB, []>; + def BDNZ : IForm_ext<16, 16, 0, 0, (outs), (ins condbrtarget:$dst), + "bdnz $dst", BrB, []>; + } } // Darwin ABI Calls. |