[llvm] r242546 - [ARM] Use [SU]ABSDIFF nodes instead of intrinsics for VABD/VABA
James Molloy
james.molloy at arm.com
Fri Jul 17 10:10:55 PDT 2015
Author: jamesm
Date: Fri Jul 17 12:10:55 2015
New Revision: 242546
URL: http://llvm.org/viewvc/llvm-project?rev=242546&view=rev
Log:
[ARM] Use [SU]ABSDIFF nodes instead of intrinsics for VABD/VABA
No functional change, but it preps codegen for the future when SABSDIFF
will start getting generated in anger.
Modified:
llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
llvm/trunk/lib/Target/ARM/ARMInstrNEON.td
Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=242546&r1=242545&r2=242546&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Fri Jul 17 12:10:55 2015
@@ -142,6 +142,11 @@ void ARMTargetLowering::addTypeForNEON(M
setOperationAction(ISD::SREM, VT, Expand);
setOperationAction(ISD::UREM, VT, Expand);
setOperationAction(ISD::FREM, VT, Expand);
+
+ if (VT.isInteger()) {
+ setOperationAction(ISD::SABSDIFF, VT, Legal);
+ setOperationAction(ISD::UABSDIFF, VT, Legal);
+ }
}
void ARMTargetLowering::addDRTypeForNEON(MVT VT) {
@@ -9717,6 +9722,15 @@ static SDValue PerformIntrinsicCombine(S
// Don't do anything for most intrinsics.
break;
+ case Intrinsic::arm_neon_vabds:
+ if (!N->getValueType(0).isInteger())
+ return SDValue();
+ return DAG.getNode(ISD::SABSDIFF, SDLoc(N), N->getValueType(0),
+ N->getOperand(1), N->getOperand(2));
+ case Intrinsic::arm_neon_vabdu:
+ return DAG.getNode(ISD::UABSDIFF, SDLoc(N), N->getValueType(0),
+ N->getOperand(1), N->getOperand(2));
+
// Vector shifts: check for immediate versions and lower them.
// Note: This is done during DAG combining instead of DAG legalizing because
// the build_vectors for 64-bit vector element shift counts are generally
Modified: llvm/trunk/lib/Target/ARM/ARMInstrNEON.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrNEON.td?rev=242546&r1=242545&r2=242546&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrNEON.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrNEON.td Fri Jul 17 12:10:55 2015
@@ -4999,10 +4999,10 @@ def VBITq : N3VX<1, 0, 0b10, 0b0001,
// VABD : Vector Absolute Difference
defm VABDs : N3VInt_QHS<0, 0, 0b0111, 0, N3RegFrm,
IIC_VSUBi4D, IIC_VSUBi4D, IIC_VSUBi4Q, IIC_VSUBi4Q,
- "vabd", "s", int_arm_neon_vabds, 1>;
+ "vabd", "s", sabsdiff, 1>;
defm VABDu : N3VInt_QHS<1, 0, 0b0111, 0, N3RegFrm,
IIC_VSUBi4D, IIC_VSUBi4D, IIC_VSUBi4Q, IIC_VSUBi4Q,
- "vabd", "u", int_arm_neon_vabdu, 1>;
+ "vabd", "u", uabsdiff, 1>;
def VABDfd : N3VDInt<1, 0, 0b10, 0b1101, 0, N3RegFrm, IIC_VBIND,
"vabd", "f32", v2f32, v2f32, int_arm_neon_vabds, 1>;
def VABDfq : N3VQInt<1, 0, 0b10, 0b1101, 0, N3RegFrm, IIC_VBINQ,
@@ -5010,21 +5010,21 @@ def VABDfq : N3VQInt<1, 0, 0b10, 0b11
// VABDL : Vector Absolute Difference Long (Q = | D - D |)
defm VABDLs : N3VLIntExt_QHS<0,1,0b0111,0, IIC_VSUBi4Q,
- "vabdl", "s", int_arm_neon_vabds, zext, 1>;
+ "vabdl", "s", sabsdiff, zext, 1>;
defm VABDLu : N3VLIntExt_QHS<1,1,0b0111,0, IIC_VSUBi4Q,
- "vabdl", "u", int_arm_neon_vabdu, zext, 1>;
+ "vabdl", "u", uabsdiff, zext, 1>;
// VABA : Vector Absolute Difference and Accumulate
defm VABAs : N3VIntOp_QHS<0,0,0b0111,1, IIC_VABAD, IIC_VABAQ,
- "vaba", "s", int_arm_neon_vabds, add>;
+ "vaba", "s", sabsdiff, add>;
defm VABAu : N3VIntOp_QHS<1,0,0b0111,1, IIC_VABAD, IIC_VABAQ,
- "vaba", "u", int_arm_neon_vabdu, add>;
+ "vaba", "u", uabsdiff, add>;
// VABAL : Vector Absolute Difference and Accumulate Long (Q += | D - D |)
defm VABALs : N3VLIntExtOp_QHS<0,1,0b0101,0, IIC_VABAD,
- "vabal", "s", int_arm_neon_vabds, zext, add>;
+ "vabal", "s", sabsdiff, zext, add>;
defm VABALu : N3VLIntExtOp_QHS<1,1,0b0101,0, IIC_VABAD,
- "vabal", "u", int_arm_neon_vabdu, zext, add>;
+ "vabal", "u", uabsdiff, zext, add>;
// Vector Maximum and Minimum.
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