From 9bc94276e796d644cb425a7c7d38cc44dbf4e9c1 Mon Sep 17 00:00:00 2001 From: Bill Schmidt Date: Fri, 30 Aug 2013 15:18:11 +0000 Subject: [PowerPC] Add handling for conversions to fast-isel. Yet another chunk of fast-isel code. This one handles various conversions involving floating-point. (It also includes some miscellaneous handling throughout the back end for LWA_32 and LWAX_32 that should have been part of the load-store patch.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189677 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp') diff --git a/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp b/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp index 08d7665..79af2ef 100644 --- a/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp +++ b/lib/Target/PowerPC/InstPrinter/PPCInstPrinter.cpp @@ -19,6 +19,7 @@ #include "llvm/MC/MCInst.h" #include "llvm/MC/MCInstrInfo.h" #include "llvm/Support/raw_ostream.h" +#include "llvm/Target/TargetOpcodes.h" using namespace llvm; #include "PPCGenAsmWriter.inc" @@ -78,6 +79,17 @@ void PPCInstPrinter::printInst(const MCInst *MI, raw_ostream &O, } } + // For fast-isel, a COPY_TO_REGCLASS may survive this long. This is + // used when converting a 32-bit float to a 64-bit float as part of + // conversion to an integer (see PPCFastISel.cpp:SelectFPToI()), + // as otherwise we have problems with incorrect register classes + // in machine instruction verification. For now, just avoid trying + // to print it as such an instruction has no effect (a 32-bit float + // in a register is already in 64-bit form, just with lower + // precision). FIXME: Is there a better solution? + if (MI->getOpcode() == TargetOpcode::COPY_TO_REGCLASS) + return; + printInstruction(MI, O); printAnnotation(O, Annot); } -- cgit v1.1