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| author | Jim Grosbach <grosbach@apple.com> | 2011-12-13 20:23:22 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2011-12-13 20:23:22 +0000 |
| commit | e91e7bcadc445381adef5c5154e8e2cba074505f (patch) | |
| tree | c04e434bc5c31aae57fe4115054452d168f9cba8 /lib | |
| parent | f10154010ec01a6965f86e8c136db79732c92eee (diff) | |
| download | external_llvm-e91e7bcadc445381adef5c5154e8e2cba074505f.zip external_llvm-e91e7bcadc445381adef5c5154e8e2cba074505f.tar.gz external_llvm-e91e7bcadc445381adef5c5154e8e2cba074505f.tar.bz2 | |
ARM pre-UAL NEG mnemonic for convenience when porting old code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146511 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/ARM/ARMInstrInfo.td | 4 | ||||
| -rw-r--r-- | lib/Target/ARM/ARMInstrThumb.td | 8 | ||||
| -rw-r--r-- | lib/Target/ARM/ARMInstrThumb2.td | 4 |
3 files changed, 13 insertions, 3 deletions
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td index 0b198f9..b696bcc 100644 --- a/lib/Target/ARM/ARMInstrInfo.td +++ b/lib/Target/ARM/ARMInstrInfo.td @@ -5127,3 +5127,7 @@ def : ARMInstAlias<"ror${s}${p} $Rn, $Rm", // 'mul' instruction can be specified with only two operands. def : ARMInstAlias<"mul${s}${p} $Rn, $Rm", (MUL rGPR:$Rn, rGPR:$Rm, rGPR:$Rn, pred:$p, cc_out:$s)>; + +// "neg" is and alias for "rsb rd, rn, #0" +def : ARMInstAlias<"neg${s}${p} $Rd, $Rm", + (RSBri GPR:$Rd, GPR:$Rm, 0, pred:$p, cc_out:$s)>; diff --git a/lib/Target/ARM/ARMInstrThumb.td b/lib/Target/ARM/ARMInstrThumb.td index c6cc98d..ac1a229 100644 --- a/lib/Target/ARM/ARMInstrThumb.td +++ b/lib/Target/ARM/ARMInstrThumb.td @@ -1131,9 +1131,6 @@ def tRSB : // A8.6.141 "rsb", "\t$Rd, $Rn, #0", [(set tGPR:$Rd, (ineg tGPR:$Rn))]>; -def : tInstAlias<"neg${s}${p} $Rd, $Rm", - (tRSB tGPR:$Rd, s_cc_out:$s, tGPR:$Rm, pred:$p)>; - // Subtract with carry register let Uses = [CPSR] in def tSBC : // A8.6.151 @@ -1435,3 +1432,8 @@ def : InstAlias<"nop", (tMOVr R8, R8, 14, 0)>,Requires<[IsThumb, IsThumb1Only]>; // nothing). def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>; def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>; + +// "neg" is and alias for "rsb rd, rn, #0" +def : tInstAlias<"neg${s}${p} $Rd, $Rm", + (tRSB tGPR:$Rd, s_cc_out:$s, tGPR:$Rm, pred:$p)>; + diff --git a/lib/Target/ARM/ARMInstrThumb2.td b/lib/Target/ARM/ARMInstrThumb2.td index f81cfa3..8ab45c6 100644 --- a/lib/Target/ARM/ARMInstrThumb2.td +++ b/lib/Target/ARM/ARMInstrThumb2.td @@ -4122,3 +4122,7 @@ def : t2InstAlias<"add${s}${p} $Rd, $imm", // Wide 'mul' encoding can be specified with only two operands. def : t2InstAlias<"mul${p} $Rn, $Rm", (t2MUL rGPR:$Rn, rGPR:$Rm, rGPR:$Rn, pred:$p)>; + +// "neg" is and alias for "rsb rd, rn, #0" +def : t2InstAlias<"neg${s}${p} $Rd, $Rm", + (t2RSBri rGPR:$Rd, rGPR:$Rm, 0, pred:$p, cc_out:$s)>; |