diff options
| author | Chris Lattner <sabre@nondot.org> | 2005-12-17 19:37:00 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-12-17 19:37:00 +0000 |
| commit | 57dd3bc46049c528858cdd02f76149d9525199fa (patch) | |
| tree | 48c518af2c4dddc0eaaaa4aca5fed0d767b4c10a /lib/Target/Sparc | |
| parent | d2cd46676c697137be7b57c04e3615ba2cdc00b2 (diff) | |
Use sethi to build large immediates with zeros at the bottom
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24779 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Sparc')
| -rw-r--r-- | lib/Target/Sparc/SparcInstrFormats.td | 3 | ||||
| -rw-r--r-- | lib/Target/Sparc/SparcInstrInfo.td | 14 |
2 files changed, 14 insertions, 3 deletions
diff --git a/lib/Target/Sparc/SparcInstrFormats.td b/lib/Target/Sparc/SparcInstrFormats.td index 503a0ec202..ace4a9c6b5 100644 --- a/lib/Target/Sparc/SparcInstrFormats.td +++ b/lib/Target/Sparc/SparcInstrFormats.td @@ -21,11 +21,12 @@ class F2 : InstV8 { // Format 2 instructions // 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; diff --git a/lib/Target/Sparc/SparcInstrInfo.td b/lib/Target/Sparc/SparcInstrInfo.td index 53d62d0501..bc6938b1fd 100644 --- a/lib/Target/Sparc/SparcInstrInfo.td +++ b/lib/Target/Sparc/SparcInstrInfo.td @@ -39,6 +39,15 @@ def simm13 : PatLeaf<(imm), [{ 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 @@ def STDFQri : F3_2<3, 0b100110, // 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, |