From 32d4c85278719aee6d060d01c7b94ffcf83f388e Mon Sep 17 00:00:00 2001 From: Jim Laskey Date: Thu, 18 Aug 2005 15:52:30 +0000 Subject: Handle loading of 0x????0000 constants with a single instruction. llvm-svn: 22858 --- llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) (limited to 'llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp') diff --git a/llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp b/llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp index fb2a93c7187..2f09a639593 100644 --- a/llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp +++ b/llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp @@ -1738,12 +1738,16 @@ unsigned ISel::SelectExpr(SDOperand N, bool Recording) { case MVT::i32: { int v = (int)cast(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); } } } -- cgit v1.2.3