diff options
Diffstat (limited to 'lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp')
-rw-r--r-- | lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp | 46 |
1 files changed, 37 insertions, 9 deletions
diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp b/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp index a4983ad672..435a93f78c 100644 --- a/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp +++ b/lib/Target/PowerPC/MCTargetDesc/PPCMCCodeEmitter.cpp @@ -102,17 +102,45 @@ public: // Output the constant in big/little endian byte order. unsigned Size = Desc.getSize(); - if (IsLittleEndian) { - for (unsigned i = 0; i != Size; ++i) { - OS << (char)Bits; - Bits >>= 8; + switch (Size) { + case 4: + if (IsLittleEndian) { + OS << (char)(Bits); + OS << (char)(Bits >> 8); + OS << (char)(Bits >> 16); + OS << (char)(Bits >> 24); + } else { + OS << (char)(Bits >> 24); + OS << (char)(Bits >> 16); + OS << (char)(Bits >> 8); + OS << (char)(Bits); } - } else { - int ShiftValue = (Size * 8) - 8; - for (unsigned i = 0; i != Size; ++i) { - OS << (char)(Bits >> ShiftValue); - Bits <<= 8; + break; + case 8: + // If we emit a pair of instructions, the first one is + // always in the top 32 bits, even on little-endian. + if (IsLittleEndian) { + OS << (char)(Bits >> 32); + OS << (char)(Bits >> 40); + OS << (char)(Bits >> 48); + OS << (char)(Bits >> 56); + OS << (char)(Bits); + OS << (char)(Bits >> 8); + OS << (char)(Bits >> 16); + OS << (char)(Bits >> 24); + } else { + OS << (char)(Bits >> 56); + OS << (char)(Bits >> 48); + OS << (char)(Bits >> 40); + OS << (char)(Bits >> 32); + OS << (char)(Bits >> 24); + OS << (char)(Bits >> 16); + OS << (char)(Bits >> 8); + OS << (char)(Bits); } + break; + default: + llvm_unreachable ("Invalid instruction size"); } ++MCNumEmitted; // Keep track of the # of mi's emitted. |