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[Mips] Adjust float ABI settings in case of MIPS16 mode.

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Hard float for mips16 means essentially to compile as soft float but to
use a runtime library for soft float that is written with native mips32
floating point instructions (those runtime routines run in mips32 hard
float mode).

The patch reviewed by Reed Kotler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195123 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Simon Atanasyan
2013-11-19 12:20:17 +00:00
parent 4d06b6d28f
commit c5e99819f4
24 changed files with 44 additions and 34 deletions
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lib/Target/Mips/MipsSubtarget.cpp
+10
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@@ -81,6 +81,16 @@ MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU,
// Parse features string.
ParseSubtargetFeatures(CPUName, FS);
if (InMips16Mode && !TM->Options.UseSoftFloat) {
// Hard float for mips16 means essentially to compile as soft float
// but to use a runtime library for soft float that is written with
// native mips32 floating point instructions (those runtime routines
// run in mips32 hard float mode).
TM->Options.UseSoftFloat = true;
TM->Options.FloatABIType = FloatABI::Soft;
InMips16HardFloat = true;
}
PreviousInMips16Mode = InMips16Mode;
// Initialize scheduling itinerary for the specified CPU.