From f2aceda854e089a8dd8646b144cea98e86895feb Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Thu, 25 Oct 2012 12:27:42 +0000 Subject: Initial TOC support for PowerPC64 object creation This patch adds initial PPC64 TOC MC object creation using the small mcmodel (a single 64K TOC) adding the some TOC relocations (R_PPC64_TOC, R_PPC64_TOC16, and R_PPC64_TOC16DS). The addition of 'undefinedExplicitRelSym' hook on 'MCELFObjectTargetWriter' is meant to avoid the creation of an unreferenced ".TOC." symbol (used in the .odp creation) as well to set the R_PPC64_TOC relocation target as the temporary ".TOC." symbol. On PPC64 ABI, the R_PPC64_TOC relocation should not point to any symbol. llvm-svn: 166677 --- llvm/lib/Target/PowerPC/PPCSubtarget.cpp | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'llvm/lib/Target/PowerPC/PPCSubtarget.cpp') diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp index 14b8534d1cb..9c8cb92cc7e 100644 --- a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp +++ b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp @@ -54,19 +54,26 @@ PPCSubtarget::PPCSubtarget(const std::string &TT, const std::string &CPU, CPUName = sys::getHostCPUName(); #endif - // Parse features string. - ParseSubtargetFeatures(CPUName, FS); - // Initialize scheduling itinerary for the specified CPU. InstrItins = getInstrItineraryForCPU(CPUName); + // Make sure 64-bit features are available when CPUname is generic + std::string FullFS = FS; + // If we are generating code for ppc64, verify that options make sense. if (is64Bit) { Has64BitSupport = true; // Silently force 64-bit register use on ppc64. Use64BitRegs = true; + if (!FullFS.empty()) + FullFS = "+64bit," + FullFS; + else + FullFS = "+64bit"; } + // Parse features string. + ParseSubtargetFeatures(CPUName, FullFS); + // If the user requested use of 64-bit regs, but the cpu selected doesn't // support it, ignore. if (use64BitRegs() && !has64BitSupport()) -- cgit v1.2.3