maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[mips] Added -mfp64 and -mfp32 options. 

These options specify 64-bit FP registers and 32-bit FP registers respectively.

When using -mfp32, the FPU has 16x double-precision registers overlapping with
the 32x single-precision registers (each double-precision register overlaps
two single-precision registers).

When using -mfp64, the FPU has 32x double-precision registers overlapping with
the 32x single-precision registers (each double-precision register overlaps
with one single-precision register and has an additional 32-bits).

MSA requires -mfp64.

llvm-svn: 192899
This commit is contained in:
Daniel Sanders 2013-10-17 14:55:58 +00:00
parent 206bf6243c
commit 9469417064
3 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
clang/include/clang/Driver/Options.td
View File

@ -1104,6 +1104,10 @@ def mmsa : Flag<["-"], "mmsa">, Group<m_Group>,
HelpText<"Enable MSA ASE (MIPS only)">;
def mno_msa : Flag<["-"], "mno-msa">, Group<m_Group>,
HelpText<"Disable MSA ASE (MIPS only)">;
def mfp64 : Flag<["-"], "mfp64">, Group<m_Group>,
HelpText<"Use 64-bit floating point registers (MIPS only)">;
def mfp32 : Flag<["-"], "mfp32">, Group<m_Group>,
HelpText<"Use 32-bit floating point registers (MIPS only)">;
def mnan_EQ : Joined<["-"], "mnan=">, Group<m_Group>;
def mips32 : Flag<["-"], "mips32">,
Alias<march_EQ>, AliasArgs<["mips32"]>,

2
clang/lib/Driver/Tools.cpp
View File

@ -982,6 +982,8 @@ static void getMIPSTargetFeatures(const Driver &D, const ArgList &Args,
"dspr2");
AddTargetFeature(Args, Features, options::OPT_mmsa, options::OPT_mno_msa,
"msa");
AddTargetFeature(Args, Features, options::OPT_mfp64, options::OPT_mfp32,
"fp64");
}
void Clang::AddMIPSTargetArgs(const ArgList &Args,

12
clang/test/Driver/mips-features.c
View File

@ -60,6 +60,18 @@
// RUN: | FileCheck --check-prefix=CHECK-NOMMSA %s
// CHECK-NOMMSA: "-target-feature" "-msa"
//
// -mfp64
// RUN: %clang -target mips-linux-gnu -### -c %s \
// RUN: -mfp32 -mfp64 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-MFP64 %s
// CHECK-MFP64: "-target-feature" "+fp64"
//
// -mfp32
// RUN: %clang -target mips-linux-gnu -### -c %s \
// RUN: -mfp64 -mfp32 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-NOMFP64 %s
// CHECK-NOMFP64: "-target-feature" "-fp64"
//
// -mxgot
// RUN: %clang -target mips-linux-gnu -### -c %s \
// RUN: -mno-xgot -mxgot 2>&1 \