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f0569be4a9
DAGcombine's ability to find reasons to remove truncates when they were not needed. Consequently, the CellSPU backend would produce correct, but _really slow and horrible_, code. Replaced with instruction sequences that do the equivalent truncation in SPUInstrInfo.td. - Re-examine how unaligned loads and stores work. Generated unaligned load code has been tested on the CellSPU hardware; see the i32operations.c and i64operations.c in CodeGen/CellSPU/useful-harnesses. (While they may be toy test code, it does prove that some real world code does compile correctly.) - Fix truncating stores in bug 3193 (note: unpack_df.ll will still make llc fault because i64 ult is not yet implemented.) - Added i64 eq and neq for setcc and select/setcc; started new instruction information file for them in SPU64InstrInfo.td. Additional i64 operations should be added to this file and not to SPUInstrInfo.td. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61447 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
//===-- SPUTargetAsmInfo.cpp - Cell SPU asm properties ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declarations of the SPUTargetAsmInfo properties.
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//
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//===----------------------------------------------------------------------===//
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#include "SPUTargetAsmInfo.h"
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#include "SPUTargetMachine.h"
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#include "llvm/Function.h"
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#include "llvm/Support/Compiler.h"
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using namespace llvm;
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SPULinuxTargetAsmInfo::SPULinuxTargetAsmInfo(const SPUTargetMachine &TM) :
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SPUTargetAsmInfo<ELFTargetAsmInfo>(TM) {
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PCSymbol = ".";
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CommentString = "#";
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GlobalPrefix = "";
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PrivateGlobalPrefix = ".L";
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// This corresponds to what the gcc SPU compiler emits, for consistency.
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CStringSection = ".rodata.str";
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// BSS section needs to be emitted as ".section"
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BSSSection = "\t.section\t.bss";
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BSSSection_ = getUnnamedSection("\t.section\t.bss",
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SectionFlags::Writeable | SectionFlags::BSS,
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true);
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}
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/// PreferredEHDataFormat - This hook allows the target to select data
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/// format used for encoding pointers in exception handling data. Reason is
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/// 0 for data, 1 for code labels, 2 for function pointers. Global is true
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/// if the symbol can be relocated.
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unsigned
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SPULinuxTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
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bool Global) const {
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// We really need to write something here.
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return TargetAsmInfo::PreferredEHDataFormat(Reason, Global);
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}
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// Instantiate default implementation.
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TEMPLATE_INSTANTIATION(class SPUTargetAsmInfo<TargetAsmInfo>);
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