Several changes to Mips backend, experimental fp support being the most
important.
- Cleanup in the Subtarget info with addition of new features, not all support
yet, but they allow the future inclusion of features easier. Among new features,
we have : Arch family info (mips1, mips2, ...), ABI info (o32, eabi), 64-bit
integer
and float registers, allegrex vector FPU (VFPU), single float only support.
- TargetMachine now detects allegrex core.
- Added allegrex (Mips32r2) sext_inreg instructions.
- *Added Float Point Instructions*, handling single float only, and
aliased accesses for 32-bit FPUs.
- Some cleanup in FP instruction formats and FP register classes.
- Calling conventions improved to support mips 32-bit EABI.
- Added Asm Printer support for fp cond codes.
- Added support for sret copy to a return register.
- EABI support added into LowerCALL and FORMAL_ARGS.
- MipsFunctionInfo now keeps a virtual register per function to track the
sret on function entry until function ret.
- MipsInstrInfo FP support into methods (isMoveInstr, isLoadFromStackSlot, ...),
FP cond codes mapping and initial FP Branch Analysis.
- Two new Mips SDNode to handle fp branch and compare instructions : FPBrcond,
FPCmp
- MipsTargetLowering : handling different FP classes, Allegrex support, sret
return copy, no homing location within EABI, non 32-bit stack objects
arguments, and asm constraint for float.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53146 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsTargetMachine.cpp b/lib/Target/Mips/MipsTargetMachine.cpp
index b4ca963..a170d6f 100644
--- a/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/lib/Target/Mips/MipsTargetMachine.cpp
@@ -34,8 +34,7 @@
// On function prologue, the stack is created by decrementing
// its pointer. Once decremented, all references are done with positive
// offset from the stack/frame pointer, so StackGrowsUp is used.
-// When using CodeModel::Large the behaviour
-//
+// Using CodeModel::Large enables different CALL behavior.
MipsTargetMachine::
MipsTargetMachine(const Module &M, const std::string &FS, bool isLittle=false):
Subtarget(*this, M, FS, isLittle),
@@ -59,22 +58,33 @@
unsigned MipsTargetMachine::
getModuleMatchQuality(const Module &M)
{
- // We strongly match "mips-*".
+ // We strongly match "mips*-*".
std::string TT = M.getTargetTriple();
if (TT.size() >= 5 && std::string(TT.begin(), TT.begin()+5) == "mips-")
return 20;
+ if (TT.size() >= 13 && std::string(TT.begin(),
+ TT.begin()+13) == "mipsallegrex-")
+ return 20;
+
return 0;
}
-// return 0 and must specify -march to gen MIPSel code.
+// return 0 and must specify -march to gen MIPSEL code.
unsigned MipselTargetMachine::
getModuleMatchQuality(const Module &M)
{
- // We strongly match "mipsel-*".
+ // We strongly match "mips*el-*".
std::string TT = M.getTargetTriple();
if (TT.size() >= 7 && std::string(TT.begin(), TT.begin()+7) == "mipsel-")
return 20;
+
+ if (TT.size() >= 15 && std::string(TT.begin(),
+ TT.begin()+15) == "mipsallegrexel-")
+ return 20;
+
+ if (TT.size() == 3 && std::string(TT.begin(), TT.begin()+3) == "psp")
+ return 20;
return 0;
}