diff options
| author | Nate Begeman <natebegeman@mac.com> | 2005-04-05 18:19:50 +0000 |
|---|---|---|
| committer | Nate Begeman <natebegeman@mac.com> | 2005-04-05 18:19:50 +0000 |
| commit | ad5f65c74bb2b06fdb5544d2dcdf586b26c44ca0 (patch) | |
| tree | 05c027b77841862b53642f41aa60de5d23aa2d32 | |
| parent | a3829d55806e5aa5e4dafd54e2e156444e7e8b1e (diff) | |
Behold, rlwinm with certain immediate arguments is printed as the much more
readable slwi or srwi (shift left/right word immediate).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21099 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/PowerPC/PPCAsmPrinter.cpp | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCAsmPrinter.cpp b/lib/Target/PowerPC/PPCAsmPrinter.cpp index 025ce9824b..3006f62410 100644 --- a/lib/Target/PowerPC/PPCAsmPrinter.cpp +++ b/lib/Target/PowerPC/PPCAsmPrinter.cpp @@ -397,6 +397,28 @@ void PowerPCAsmPrinter::printOp(const MachineOperand &MO, bool IsCallOp) { /// void PowerPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) { ++EmittedInsts; + // Check for slwi/srwi mnemonics. + if (MI->getOpcode() == PPC::RLWINM) { + bool FoundMnemonic = false; + unsigned char SH = MI->getOperand(2).getImmedValue(); + unsigned char MB = MI->getOperand(3).getImmedValue(); + unsigned char ME = MI->getOperand(4).getImmedValue(); + if (SH <= 31 && MB == 0 && ME == (31-SH)) { + O << "slwi "; FoundMnemonic = true; + } + if (SH <= 31 && MB == (32-SH) && ME == 31) { + O << "srwi "; FoundMnemonic = true; + SH = 32-SH; + } + if (FoundMnemonic) { + printOperand(MI, 0, MVT::i64); + O << ", "; + printOperand(MI, 1, MVT::i64); + O << ", " << (unsigned int)SH << "\n"; + return; + } + } + if (printInstruction(MI)) return; // Printer was automatically generated |