diff options
| -rw-r--r-- | include/llvm/ADT/Triple.h | 1 | ||||
| -rw-r--r-- | include/llvm/MC/MCAsmInfo.h | 18 | ||||
| -rw-r--r-- | lib/MC/MCAsmInfo.cpp | 2 | ||||
| -rw-r--r-- | lib/MC/MCDwarf.cpp | 2 | ||||
| -rw-r--r-- | lib/Support/Triple.cpp | 2 | ||||
| -rw-r--r-- | lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp | 14 |
6 files changed, 34 insertions, 5 deletions
diff --git a/include/llvm/ADT/Triple.h b/include/llvm/ADT/Triple.h index 49d9f68..7968a12 100644 --- a/include/llvm/ADT/Triple.h +++ b/include/llvm/ADT/Triple.h @@ -111,6 +111,7 @@ public: GNU, GNUEABI, GNUEABIHF, + GNUX32, EABI, MachO, Android, diff --git a/include/llvm/MC/MCAsmInfo.h b/include/llvm/MC/MCAsmInfo.h index 97114bb..7474ac8 100644 --- a/include/llvm/MC/MCAsmInfo.h +++ b/include/llvm/MC/MCAsmInfo.h @@ -48,6 +48,11 @@ namespace llvm { /// Default is 4. unsigned PointerSize; + /// CalleeSaveStackSlotSize - Size of the stack slot reserved for + /// callee-saved registers, in bytes. + /// Default is same as pointer size. + unsigned CalleeSaveStackSlotSize; + /// IsLittleEndian - True if target is little endian. /// Default is true. bool IsLittleEndian; @@ -343,7 +348,18 @@ namespace llvm { return PointerSize; } - /// islittleendian - True if the target is little endian. + /// getCalleeSaveStackSlotSize - Get the callee-saved register stack slot + /// size in bytes. + unsigned getCalleeSaveStackSlotSize() const { + // If a target doesn't explicitly initialize this member, PointerSize is + // used by default. + if (CalleeSaveStackSlotSize == 0) + return PointerSize; + else + return CalleeSaveStackSlotSize; + } + + /// isLittleEndian - True if the target is little endian. bool isLittleEndian() const { return IsLittleEndian; } diff --git a/lib/MC/MCAsmInfo.cpp b/lib/MC/MCAsmInfo.cpp index a6fa658..de1095b 100644 --- a/lib/MC/MCAsmInfo.cpp +++ b/lib/MC/MCAsmInfo.cpp @@ -24,6 +24,8 @@ using namespace llvm; MCAsmInfo::MCAsmInfo() { PointerSize = 4; + CalleeSaveStackSlotSize = 0; // 0 means PointerSize is used in getter. + IsLittleEndian = true; StackGrowsUp = false; HasSubsectionsViaSymbols = false; diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp index 74851ce..3cf47bc 100644 --- a/lib/MC/MCDwarf.cpp +++ b/lib/MC/MCDwarf.cpp @@ -792,7 +792,7 @@ void MCGenDwarfLabelEntry::Make(MCSymbol *Symbol, MCStreamer *MCOS, static int getDataAlignmentFactor(MCStreamer &streamer) { MCContext &context = streamer.getContext(); const MCAsmInfo &asmInfo = context.getAsmInfo(); - int size = asmInfo.getPointerSize(); + int size = asmInfo.getCalleeSaveStackSlotSize(); if (asmInfo.isStackGrowthDirectionUp()) return size; else diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp index eefb96b..ad7b189 100644 --- a/lib/Support/Triple.cpp +++ b/lib/Support/Triple.cpp @@ -140,6 +140,7 @@ const char *Triple::getEnvironmentTypeName(EnvironmentType Kind) { case GNU: return "gnu"; case GNUEABIHF: return "gnueabihf"; case GNUEABI: return "gnueabi"; + case GNUX32: return "gnux32"; case EABI: return "eabi"; case MachO: return "macho"; case Android: return "android"; @@ -284,6 +285,7 @@ static Triple::EnvironmentType parseEnvironment(StringRef EnvironmentName) { .StartsWith("eabi", Triple::EABI) .StartsWith("gnueabihf", Triple::GNUEABIHF) .StartsWith("gnueabi", Triple::GNUEABI) + .StartsWith("gnux32", Triple::GNUX32) .StartsWith("gnu", Triple::GNU) .StartsWith("macho", Triple::MachO) .StartsWith("android", Triple::Android) diff --git a/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp b/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp index 16488eb..7815ae9 100644 --- a/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp +++ b/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp @@ -44,7 +44,7 @@ void X86MCAsmInfoDarwin::anchor() { } X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &T) { bool is64Bit = T.getArch() == Triple::x86_64; if (is64Bit) - PointerSize = 8; + PointerSize = CalleeSaveStackSlotSize = 8; AssemblerDialect = AsmWriterFlavor; @@ -76,8 +76,16 @@ X86_64MCAsmInfoDarwin::X86_64MCAsmInfoDarwin(const Triple &Triple) void X86ELFMCAsmInfo::anchor() { } X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) { - if (T.getArch() == Triple::x86_64) - PointerSize = 8; + bool is64Bit = T.getArch() == Triple::x86_64; + bool isX32 = T.getEnvironment() == Triple::GNUX32; + + // For ELF, x86-64 pointer size depends on the ABI. + // For x86-64 without the x32 ABI, pointer size is 8. For x86 and for x86-64 + // with the x32 ABI, pointer size remains the default 4. + PointerSize = (is64Bit && !isX32) ? 8 : 4; + + // OTOH, stack slot size is always 8 for x86-64, even with the x32 ABI. + CalleeSaveStackSlotSize = is64Bit ? 8 : 4; AssemblerDialect = AsmWriterFlavor; |