Changes in directory llvm/lib/Target/SparcV8:
SparcV8InstrFormats.td updated: 1.11 -> 1.12
SparcV8InstrInfo.td updated: 1.53 -> 1.54
---
Log message:
Use sethi to build large immediates with zeros at the bottom
---
Diffs of the changes: (+14 -3)
SparcV8InstrFormats.td | 3 ++-
SparcV8InstrInfo.td | 14 ++++++++++++--
2 files changed, 14 insertions(+), 3 deletions(-)
Index: llvm/lib/Target/SparcV8/SparcV8InstrFormats.td
diff -u llvm/lib/Target/SparcV8/SparcV8InstrFormats.td:1.11
llvm/lib/Target/SparcV8/SparcV8InstrFormats.td:1.12
--- llvm/lib/Target/SparcV8/SparcV8InstrFormats.td:1.11 Sat Dec 17 12:49:14 2005
+++ llvm/lib/Target/SparcV8/SparcV8InstrFormats.td Sat Dec 17 13:37:00 2005
@@ -21,11 +21,12 @@
// Specific F2 classes: SparcV8 manual, page 44
//
-class F2_1<bits<3> op2Val, dag ops, string asmstr> : F2 {
+class F2_1<bits<3> op2Val, dag ops, string asmstr, list<dag> pattern> : F2 {
bits<5> rd;
dag OperandList = ops;
let AsmString = asmstr;
+ let Pattern = pattern;
let op2 = op2Val;
Index: llvm/lib/Target/SparcV8/SparcV8InstrInfo.td
diff -u llvm/lib/Target/SparcV8/SparcV8InstrInfo.td:1.53
llvm/lib/Target/SparcV8/SparcV8InstrInfo.td:1.54
--- llvm/lib/Target/SparcV8/SparcV8InstrInfo.td:1.53 Sat Dec 17 13:07:57 2005
+++ llvm/lib/Target/SparcV8/SparcV8InstrInfo.td Sat Dec 17 13:37:00 2005
@@ -39,6 +39,15 @@
return (((int)N->getValue() << (32-13)) >> (32-13)) == (int)N->getValue();
}]>;
+def HI22 : SDNodeXForm<imm, [{
+ // Transformation function: shift the immediate value down into the low bits.
+ return CurDAG->getTargetConstant((unsigned)N->getValue() >> 10, MVT::i32);
+}]>;
+
+def SETHIimm : PatLeaf<(imm), [{
+ return (((unsigned)N->getValue() >> 10) << 10) == (unsigned)N->getValue();
+}], HI22>;
+
//===----------------------------------------------------------------------===//
// Instructions
//===----------------------------------------------------------------------===//
@@ -160,12 +169,13 @@
// Section B.9 - SETHI Instruction, p. 104
def SETHIi: F2_1<0b100,
(ops IntRegs:$dst, i32imm:$src),
- "sethi $src, $dst">;
+ "sethi $src, $dst",
+ [(set IntRegs:$dst, SETHIimm:$src)]>;
// Section B.10 - NOP Instruction, p. 105
// (It's a special case of SETHI)
let rd = 0, imm22 = 0 in
- def NOP : F2_1<0b100, (ops), "nop">;
+ def NOP : F2_1<0b100, (ops), "nop", []>;
// Section B.11 - Logical Instructions, p. 106
def ANDrr : F3_1<2, 0b000001,
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