diff options
| author | Jim Laskey <jlaskey@mac.com> | 2005-08-18 15:52:30 +0000 |
|---|---|---|
| committer | Jim Laskey <jlaskey@mac.com> | 2005-08-18 15:52:30 +0000 |
| commit | 3285aadce9fb037d684d704e07610b09fb940ad7 (patch) | |
| tree | a43d9e9f8658b34d020344332407423f0847c1ac /lib/Target/PowerPC/PPCISelPattern.cpp | |
| parent | cffc32b6e2e1edc2ddd62a00159f7008ee765d3e (diff) | |
Handle loading of 0x????0000 constants with a single instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22858 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PPCISelPattern.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCISelPattern.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/Target/PowerPC/PPCISelPattern.cpp b/lib/Target/PowerPC/PPCISelPattern.cpp index fb2a93c718..2f09a63959 100644 --- a/lib/Target/PowerPC/PPCISelPattern.cpp +++ b/lib/Target/PowerPC/PPCISelPattern.cpp @@ -1738,12 +1738,16 @@ unsigned ISel::SelectExpr(SDOperand N, bool Recording) { case MVT::i32: { int v = (int)cast<ConstantSDNode>(N)->getSignExtended(); - if (v < 32768 && v >= -32768) { - BuildMI(BB, PPC::LI, 1, Result).addSImm(v); - } else { + unsigned Hi = Hi16(v); + unsigned Lo = Lo16(v); + if (Hi && Lo) { Tmp1 = MakeIntReg(); - BuildMI(BB, PPC::LIS, 1, Tmp1).addSImm(v >> 16); - BuildMI(BB, PPC::ORI, 2, Result).addReg(Tmp1).addImm(v & 0xFFFF); + BuildMI(BB, PPC::LIS, 1, Tmp1).addSImm(Hi); + BuildMI(BB, PPC::ORI, 2, Result).addReg(Tmp1).addImm(Lo); + } else if (Lo) { + BuildMI(BB, PPC::LI, 1, Result).addSImm(Lo); + } else { + BuildMI(BB, PPC::LIS, 1, Result).addSImm(Hi); } } } |