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GlobalISel: implement low-level type with just size & vector lanes.

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This should be all the low-level instruction selection needs to determine how
to implement an operation, with the remaining context taken from the opcode
(e.g. G_ADD vs G_FADD) or other flags not based on type (e.g. fast-math).

llvm-svn: 276158
This commit is contained in:
Tim Northover
2016-07-20 19:09:30 +00:00
parent 228d27c70f
commit 62ae568bbb
21 changed files with 391 additions and 181 deletions
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18
llvm/lib/CodeGen/MachineInstr.cpp
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@@ -656,7 +656,7 @@ MachineInstr::MachineInstr(MachineFunction &MF, const MCInstrDesc &tid,
debugLoc(std::move(dl))
#ifdef LLVM_BUILD_GLOBAL_ISEL
,
Ty(nullptr)
Ty(LLT{})
#endif
{
assert(debugLoc.hasTrivialDestructor() && "Expected trivial destructor");
@@ -680,7 +680,7 @@ MachineInstr::MachineInstr(MachineFunction &MF, const MachineInstr &MI)
MemRefs(MI.MemRefs), debugLoc(MI.getDebugLoc())
#ifdef LLVM_BUILD_GLOBAL_ISEL
,
Ty(nullptr)
Ty(LLT{})
#endif
{
assert(debugLoc.hasTrivialDestructor() && "Expected trivial destructor");
@@ -710,18 +710,18 @@ MachineRegisterInfo *MachineInstr::getRegInfo() {
// The proper implementation is WIP and is tracked here:
// PR26576.
#ifndef LLVM_BUILD_GLOBAL_ISEL
void MachineInstr::setType(Type *Ty) {}
void MachineInstr::setType(LLT Ty) {}
Type *MachineInstr::getType() const { return nullptr; }
LLT MachineInstr::getType() const { return LLT{}; }
#else
void MachineInstr::setType(Type *Ty) {
assert((!Ty || isPreISelGenericOpcode(getOpcode())) &&
void MachineInstr::setType(LLT Ty) {
assert((!Ty.isValid() || isPreISelGenericOpcode(getOpcode())) &&
"Non generic instructions are not supposed to be typed");
this->Ty = Ty;
}
Type *MachineInstr::getType() const { return Ty; }
LLT MachineInstr::getType() const { return Ty; }
#endif // LLVM_BUILD_GLOBAL_ISEL
/// RemoveRegOperandsFromUseLists - Unlink all of the register operands in
@@ -1724,9 +1724,9 @@ void MachineInstr::print(raw_ostream &OS, ModuleSlotTracker &MST,
else
OS << "UNKNOWN";
if (getType()) {
if (getType().isValid()) {
OS << ' ';
getType()->print(OS, /*IsForDebug*/ false, /*NoDetails*/ true);
getType().print(OS);
OS << ' ';
}