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| author | Nate Begeman <natebegeman@mac.com> | 2005-04-06 22:42:08 +0000 |
|---|---|---|
| committer | Nate Begeman <natebegeman@mac.com> | 2005-04-06 22:42:08 +0000 |
| commit | 505f6b760d74af083087953f313effb10eb34253 (patch) | |
| tree | a10674404c45d9e942adfa50750d6ea379b69beb /llvm/lib | |
| parent | 7ca0947274ef5eb4352ca73c24f1156f9b2b63cd (diff) | |
| download | bcm5719-llvm-505f6b760d74af083087953f313effb10eb34253.tar.gz bcm5719-llvm-505f6b760d74af083087953f313effb10eb34253.zip | |
Fix some shift bugs
llvm-svn: 21126
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp b/llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp index 80c554c824a..4a318b259b7 100644 --- a/llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp +++ b/llvm/lib/Target/PowerPC/PPC32ISelSimple.cpp @@ -2779,8 +2779,13 @@ void PPC32ISel::emitShiftOperation(MachineBasicBlock *MBB, .addImm(32-Amount).addImm(Amount).addImm(31); BuildMI(*MBB, IP, PPC::RLWIMI, 5, DestReg+1).addReg(TempReg) .addReg(SrcReg).addImm(32-Amount).addImm(0).addImm(Amount-1); - BuildMI(*MBB, IP, PPC::RLWINM, 4, DestReg).addReg(SrcReg) - .addImm(32-Amount).addImm(Amount).addImm(31); + if (isSigned) { + BuildMI(*MBB, IP, PPC::SRAWI, 2, DestReg).addReg(SrcReg) + .addImm(Amount); + } else { + BuildMI(*MBB, IP, PPC::RLWINM, 4, DestReg).addReg(SrcReg) + .addImm(32-Amount).addImm(Amount).addImm(31); + } } } else { // Shifting more than 32 bits Amount -= 32; @@ -2805,7 +2810,11 @@ void PPC32ISel::emitShiftOperation(MachineBasicBlock *MBB, BuildMI(*MBB, IP, PPC::OR, 2, DestReg+1).addReg(SrcReg) .addReg(SrcReg); } - BuildMI(*MBB, IP,PPC::LI, 1, DestReg).addSImm(0); + if (isSigned) + BuildMI(*MBB, IP, PPC::SRAWI, 2, DestReg).addReg(SrcReg) + .addImm(31); + else + BuildMI(*MBB, IP,PPC::LI, 1, DestReg).addSImm(0); } } } else { |
