Changes in directory llvm/lib/Target/PowerPC:
PPCInstrFormats.td updated: 1.61 -> 1.62
PPCInstrInfo.td updated: 1.156 -> 1.157
---
Log message:
Add support for fmul node of type v4f32.
void %foo(<4 x float> * %a) {
entry:
%tmp1 = load <4 x float> * %a;
%tmp2 = mul <4 x float> %tmp1, %tmp1
store <4 x float> %tmp2, <4 x float> *%a
ret void
}
Is selected to:
_foo:
li r2, 0
lvx v0, r2, r3
vxor v1, v1, v1
vmaddfp v0, v0, v0, v1
stvx v0, r2, r3
blr
---
Diffs of the changes: (+21 -0)
PPCInstrFormats.td | 8 ++++++++
PPCInstrInfo.td | 13 +++++++++++++
2 files changed, 21 insertions(+)
Index: llvm/lib/Target/PowerPC/PPCInstrFormats.td
diff -u llvm/lib/Target/PowerPC/PPCInstrFormats.td:1.61
llvm/lib/Target/PowerPC/PPCInstrFormats.td:1.62
--- llvm/lib/Target/PowerPC/PPCInstrFormats.td:1.61 Fri Dec 9 17:54:17 2005
+++ llvm/lib/Target/PowerPC/PPCInstrFormats.td Tue Dec 13 18:34:09 2005
@@ -602,6 +602,14 @@
let Inst{21-31} = xo;
}
+class VXForm_setzero<bits<11> xo, dag OL, string asmstr,
+ InstrItinClass itin, list<dag> pattern>
+ : VXForm_1<xo, OL, asmstr, itin, pattern> {
+ let VA = VD;
+ let VB = VD;
+}
+
+
class VXForm_2<bits<11> xo, dag OL, string asmstr,
InstrItinClass itin, list<dag> pattern>
: I<4, OL, asmstr, itin> {
Index: llvm/lib/Target/PowerPC/PPCInstrInfo.td
diff -u llvm/lib/Target/PowerPC/PPCInstrInfo.td:1.156
llvm/lib/Target/PowerPC/PPCInstrInfo.td:1.157
--- llvm/lib/Target/PowerPC/PPCInstrInfo.td:1.156 Tue Dec 13 16:55:22 2005
+++ llvm/lib/Target/PowerPC/PPCInstrInfo.td Tue Dec 13 18:34:09 2005
@@ -897,6 +897,16 @@
def VSUBFP : VXForm_1<74, (ops VRRC:$vD, VRRC:$vA, VRRC:$vB),
"vsubfp $vD, $vA, $vB", VecFP,
[(set VRRC:$vD, (fsub VRRC:$vA, VRRC:$vB))]>;
+def VXOR : VXForm_1<1220, (ops VRRC:$vD, VRRC:$vA, VRRC:$vB),
+ "vxor $vD, $vA, $vB", VecFP,
+ []>;
+
+// VX-Form Pseudo Instructions
+
+def V_SET0 : VXForm_setzero<1220, (ops VRRC:$vD),
+ "vxor $vD, $vD, $vD", VecFP,
+ []>;
+
//===----------------------------------------------------------------------===//
// PowerPC Instruction Patterns
@@ -951,6 +961,9 @@
def : Pat<(add GPRC:$in, (PPChi tconstpool:$g, 0)),
(ADDIS GPRC:$in, tconstpool:$g)>;
+def : Pat<(fmul VRRC:$vA, VRRC:$vB),
+ (VMADDFP VRRC:$vA, (V_SET0), VRRC:$vB)>;
+
// Fused multiply add and multiply sub for packed float. These are represented
// separately from the real instructions above, for operations that must have
// the additional precision, such as Newton-Rhapson (used by divide, sqrt)
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