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Mips: Remove global set. 

Backends shouldn't retain any global state. No functionality change.

llvm-svn: 183927
This commit is contained in:
Benjamin Kramer 2013-06-13 19:06:52 +00:00
parent 3b3a166ce6
commit c4d547d3ae
2 changed files with 68 additions and 57 deletions
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123
llvm/lib/Target/Mips/Mips16ISelLowering.cpp
View File

@ -18,7 +18,6 @@
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Target/TargetInstrInfo.h"
#include <set>
using namespace llvm;
@ -30,9 +29,54 @@ static cl::opt<bool> DontExpandCondPseudos16(
cl::Hidden);
namespace {
std::set<const char*, MipsTargetLowering::LTStr> NoHelperNeeded;
struct Mips16Libcall {
RTLIB::Libcall Libcall;
const char *Name;
bool operator<(const Mips16Libcall &RHS) const {
return std::strcmp(Name, RHS.Name) < 0;
}
};
}
// Libcalls for which no helper is generated. Sorted by name for binary search.
static const Mips16Libcall HardFloatLibCalls[] = {
{ RTLIB::ADD_F64, "__mips16_adddf3" },
{ RTLIB::ADD_F32, "__mips16_addsf3" },
{ RTLIB::DIV_F64, "__mips16_divdf3" },
{ RTLIB::DIV_F32, "__mips16_divsf3" },
{ RTLIB::OEQ_F64, "__mips16_eqdf2" },
{ RTLIB::OEQ_F32, "__mips16_eqsf2" },
{ RTLIB::FPEXT_F32_F64, "__mips16_extendsfdf2" },
{ RTLIB::FPTOSINT_F64_I32, "__mips16_fix_truncdfsi" },
{ RTLIB::FPTOSINT_F32_I32, "__mips16_fix_truncsfsi" },
{ RTLIB::SINTTOFP_I32_F64, "__mips16_floatsidf" },
{ RTLIB::SINTTOFP_I32_F32, "__mips16_floatsisf" },
{ RTLIB::UINTTOFP_I32_F64, "__mips16_floatunsidf" },
{ RTLIB::UINTTOFP_I32_F32, "__mips16_floatunsisf" },
{ RTLIB::OGE_F64, "__mips16_gedf2" },
{ RTLIB::OGE_F32, "__mips16_gesf2" },
{ RTLIB::OGT_F64, "__mips16_gtdf2" },
{ RTLIB::OGT_F32, "__mips16_gtsf2" },
{ RTLIB::OLE_F64, "__mips16_ledf2" },
{ RTLIB::OLE_F32, "__mips16_lesf2" },
{ RTLIB::OLT_F64, "__mips16_ltdf2" },
{ RTLIB::OLT_F32, "__mips16_ltsf2" },
{ RTLIB::MUL_F64, "__mips16_muldf3" },
{ RTLIB::MUL_F32, "__mips16_mulsf3" },
{ RTLIB::UNE_F64, "__mips16_nedf2" },
{ RTLIB::UNE_F32, "__mips16_nesf2" },
{ RTLIB::UNKNOWN_LIBCALL, "__mips16_ret_dc" }, // No associated libcall.
{ RTLIB::UNKNOWN_LIBCALL, "__mips16_ret_df" }, // No associated libcall.
{ RTLIB::UNKNOWN_LIBCALL, "__mips16_ret_sc" }, // No associated libcall.
{ RTLIB::UNKNOWN_LIBCALL, "__mips16_ret_sf" }, // No associated libcall.
{ RTLIB::SUB_F64, "__mips16_subdf3" },
{ RTLIB::SUB_F32, "__mips16_subsf3" },
{ RTLIB::FPROUND_F64_F32, "__mips16_truncdfsf2" },
{ RTLIB::UO_F64, "__mips16_unorddf2" },
{ RTLIB::UO_F32, "__mips16_unordsf2" }
};
Mips16TargetLowering::Mips16TargetLowering(MipsTargetMachine &TM)
: MipsTargetLowering(TM) {
//
@ -46,13 +90,9 @@ Mips16TargetLowering::Mips16TargetLowering(MipsTargetMachine &TM)
// Set up the register classes
addRegisterClass(MVT::i32, &Mips::CPU16RegsRegClass);
if (Subtarget->inMips16HardFloat()) {
if (Subtarget->inMips16HardFloat())
setMips16HardFloatLibCalls();
NoHelperNeeded.insert("__mips16_ret_sf");
NoHelperNeeded.insert("__mips16_ret_df");
NoHelperNeeded.insert("__mips16_ret_sc");
NoHelperNeeded.insert("__mips16_ret_dc");
}
setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Expand);
setOperationAction(ISD::ATOMIC_CMP_SWAP, MVT::i32, Expand);
setOperationAction(ISD::ATOMIC_SWAP, MVT::i32, Expand);
@ -166,47 +206,17 @@ isEligibleForTailCallOptimization(const MipsCC &MipsCCInfo,
return false;
}
void Mips16TargetLowering::setMips16LibcallName
(RTLIB::Libcall L, const char *Name) {
setLibcallName(L, Name);
NoHelperNeeded.insert(Name);
}
void Mips16TargetLowering::setMips16HardFloatLibCalls() {
setMips16LibcallName(RTLIB::ADD_F32, "__mips16_addsf3");
setMips16LibcallName(RTLIB::ADD_F64, "__mips16_adddf3");
setMips16LibcallName(RTLIB::SUB_F32, "__mips16_subsf3");
setMips16LibcallName(RTLIB::SUB_F64, "__mips16_subdf3");
setMips16LibcallName(RTLIB::MUL_F32, "__mips16_mulsf3");
setMips16LibcallName(RTLIB::MUL_F64, "__mips16_muldf3");
setMips16LibcallName(RTLIB::DIV_F32, "__mips16_divsf3");
setMips16LibcallName(RTLIB::DIV_F64, "__mips16_divdf3");
setMips16LibcallName(RTLIB::FPEXT_F32_F64, "__mips16_extendsfdf2");
setMips16LibcallName(RTLIB::FPROUND_F64_F32, "__mips16_truncdfsf2");
setMips16LibcallName(RTLIB::FPTOSINT_F32_I32, "__mips16_fix_truncsfsi");
setMips16LibcallName(RTLIB::FPTOSINT_F64_I32, "__mips16_fix_truncdfsi");
setMips16LibcallName(RTLIB::SINTTOFP_I32_F32, "__mips16_floatsisf");
setMips16LibcallName(RTLIB::SINTTOFP_I32_F64, "__mips16_floatsidf");
setMips16LibcallName(RTLIB::UINTTOFP_I32_F32, "__mips16_floatunsisf");
setMips16LibcallName(RTLIB::UINTTOFP_I32_F64, "__mips16_floatunsidf");
setMips16LibcallName(RTLIB::OEQ_F32, "__mips16_eqsf2");
setMips16LibcallName(RTLIB::OEQ_F64, "__mips16_eqdf2");
setMips16LibcallName(RTLIB::UNE_F32, "__mips16_nesf2");
setMips16LibcallName(RTLIB::UNE_F64, "__mips16_nedf2");
setMips16LibcallName(RTLIB::OGE_F32, "__mips16_gesf2");
setMips16LibcallName(RTLIB::OGE_F64, "__mips16_gedf2");
setMips16LibcallName(RTLIB::OLT_F32, "__mips16_ltsf2");
setMips16LibcallName(RTLIB::OLT_F64, "__mips16_ltdf2");
setMips16LibcallName(RTLIB::OLE_F32, "__mips16_lesf2");
setMips16LibcallName(RTLIB::OLE_F64, "__mips16_ledf2");
setMips16LibcallName(RTLIB::OGT_F32, "__mips16_gtsf2");
setMips16LibcallName(RTLIB::OGT_F64, "__mips16_gtdf2");
setMips16LibcallName(RTLIB::UO_F32, "__mips16_unordsf2");
setMips16LibcallName(RTLIB::UO_F64, "__mips16_unorddf2");
setMips16LibcallName(RTLIB::O_F32, "__mips16_unordsf2");
setMips16LibcallName(RTLIB::O_F64, "__mips16_unorddf2");
}
for (unsigned I = 0; I != array_lengthof(HardFloatLibCalls); ++I) {
assert((I == 0 || HardFloatLibCalls[I - 1] < HardFloatLibCalls[I]) &&
"Array not sorted!");
if (HardFloatLibCalls[I].Libcall != RTLIB::UNKNOWN_LIBCALL)
setLibcallName(HardFloatLibCalls[I].Libcall, HardFloatLibCalls[I].Name);
}
setLibcallName(RTLIB::O_F64, "__mips16_unorddf2");
setLibcallName(RTLIB::O_F32, "__mips16_unordsf2");
}
//
// The Mips16 hard float is a crazy quilt inherited from gcc. I have a much
@ -383,16 +393,19 @@ getOpndList(SmallVectorImpl<SDValue> &Ops,
//
bool LookupHelper = true;
if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(CLI.Callee)) {
if (NoHelperNeeded.find(S->getSymbol()) != NoHelperNeeded.end()) {
Mips16Libcall Find = { RTLIB::UNKNOWN_LIBCALL, S->getSymbol() };
if (std::binary_search(HardFloatLibCalls, array_endof(HardFloatLibCalls),
Find))
LookupHelper = false;
}
}
else if (GlobalAddressSDNode *G =
dyn_cast<GlobalAddressSDNode>(CLI.Callee)) {
if (NoHelperNeeded.find(G->getGlobal()->getName().data()) !=
NoHelperNeeded.end()) {
} else if (GlobalAddressSDNode *G =
dyn_cast<GlobalAddressSDNode>(CLI.Callee)) {
Mips16Libcall Find = { RTLIB::UNKNOWN_LIBCALL,
G->getGlobal()->getName().data() };
if (std::binary_search(HardFloatLibCalls, array_endof(HardFloatLibCalls),
Find))
LookupHelper = false;
}
}
if (LookupHelper) Mips16HelperFunction =
getMips16HelperFunction(CLI.RetTy, CLI.Args, NeedMips16Helper);

2
llvm/lib/Target/Mips/Mips16ISelLowering.h
View File

@ -32,8 +32,6 @@ namespace llvm {
unsigned NextStackOffset,
const MipsFunctionInfo& FI) const;
void setMips16LibcallName(RTLIB::Libcall, const char *Name);
void setMips16HardFloatLibCalls();
unsigned int