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| author | Venkatraman Govindaraju <venkatra@cs.wisc.edu> | 2013-06-03 00:21:54 +0000 |
|---|---|---|
| committer | Venkatraman Govindaraju <venkatra@cs.wisc.edu> | 2013-06-03 00:21:54 +0000 |
| commit | 774fe2e29a21815d7d107c00dc52a37eb91ecbc5 (patch) | |
| tree | dac391f5cf3a2a0ea32d09961e4d5749eb006d44 /llvm/lib/Target/Sparc | |
| parent | f3fabd2cb5bdeb6396e0bad7023750eca2f67674 (diff) | |
| download | bcm5719-llvm-774fe2e29a21815d7d107c00dc52a37eb91ecbc5.tar.gz bcm5719-llvm-774fe2e29a21815d7d107c00dc52a37eb91ecbc5.zip | |
Sparc: When storing 0, use %g0 directly in the store instruction instead of
using two instructions (sethi and store).
llvm-svn: 183090
Diffstat (limited to 'llvm/lib/Target/Sparc')
| -rw-r--r-- | llvm/lib/Target/Sparc/SparcInstr64Bit.td | 4 | ||||
| -rw-r--r-- | llvm/lib/Target/Sparc/SparcInstrInfo.td | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Target/Sparc/SparcInstr64Bit.td b/llvm/lib/Target/Sparc/SparcInstr64Bit.td index daafb432372..ed7f05f3c4b 100644 --- a/llvm/lib/Target/Sparc/SparcInstr64Bit.td +++ b/llvm/lib/Target/Sparc/SparcInstr64Bit.td @@ -286,6 +286,10 @@ def : Pat<(truncstorei16 i64:$src, ADDRri:$addr), (STHri ADDRri:$addr, $src)>; def : Pat<(truncstorei32 i64:$src, ADDRrr:$addr), (STrr ADDRrr:$addr, $src)>; def : Pat<(truncstorei32 i64:$src, ADDRri:$addr), (STri ADDRri:$addr, $src)>; +// store 0, addr -> store %g0, addr +def : Pat<(store (i64 0), ADDRrr:$dst), (STXrr ADDRrr:$dst, (i64 G0))>; +def : Pat<(store (i64 0), ADDRri:$dst), (STXri ADDRri:$dst, (i64 G0))>; + } // Predicates = [Is64Bit] diff --git a/llvm/lib/Target/Sparc/SparcInstrInfo.td b/llvm/lib/Target/Sparc/SparcInstrInfo.td index 8f2ba2655ca..45ff113b72c 100644 --- a/llvm/lib/Target/Sparc/SparcInstrInfo.td +++ b/llvm/lib/Target/Sparc/SparcInstrInfo.td @@ -815,4 +815,8 @@ def : Pat<(i32 (extloadi16 ADDRri:$src)), (LDUHri ADDRri:$src)>; def : Pat<(i32 (zextloadi1 ADDRrr:$src)), (LDUBrr ADDRrr:$src)>; def : Pat<(i32 (zextloadi1 ADDRri:$src)), (LDUBri ADDRri:$src)>; +// store 0, addr -> store %g0, addr +def : Pat<(store (i32 0), ADDRrr:$dst), (STrr ADDRrr:$dst, (i32 G0))>; +def : Pat<(store (i32 0), ADDRri:$dst), (STri ADDRri:$dst, (i32 G0))>; + include "SparcInstr64Bit.td" |
