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| author | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-08-19 12:48:54 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-08-19 12:48:54 +0000 |
| commit | b0d40a22e5aa1a51913fa161c2ce5513d7bd9293 (patch) | |
| tree | 52334bd3daccd16d29c2a27180d1a2e986ec640e /lib/Target/SystemZ/SystemZOperators.td | |
| parent | 80f54784da0bd42fb79176bbf447a31d69287fe3 (diff) | |
| download | external_llvm-b0d40a22e5aa1a51913fa161c2ce5513d7bd9293.zip external_llvm-b0d40a22e5aa1a51913fa161c2ce5513d7bd9293.tar.gz external_llvm-b0d40a22e5aa1a51913fa161c2ce5513d7bd9293.tar.bz2 | |
[SystemZ] Add integer absolute (load positive)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188670 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/SystemZ/SystemZOperators.td')
| -rw-r--r-- | lib/Target/SystemZ/SystemZOperators.td | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Target/SystemZ/SystemZOperators.td b/lib/Target/SystemZ/SystemZOperators.td index 8d6c619..59e1ffc 100644 --- a/lib/Target/SystemZ/SystemZOperators.td +++ b/lib/Target/SystemZ/SystemZOperators.td @@ -240,6 +240,14 @@ def or_as_revinserti8 : PatFrag<(ops node:$src1, node:$src2), APInt::getLowBitsSet(BitWidth, 8)); }]>; +// Integer absolute, matching the canonical form generated by DAGCombiner. +def z_iabs32 : PatFrag<(ops node:$src), + (xor (add node:$src, (sra node:$src, (i32 31))), + (sra node:$src, (i32 31)))>; +def z_iabs64 : PatFrag<(ops node:$src), + (xor (add node:$src, (sra node:$src, (i32 63))), + (sra node:$src, (i32 63)))>; + // Fused multiply-add and multiply-subtract, but with the order of the // operands matching SystemZ's MA and MS instructions. def z_fma : PatFrag<(ops node:$src1, node:$src2, node:$src3), |