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[mips] Add initial (experimental) MIPS-IV support.

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Summary:
Adds the 'mips4' processor and a simple test of the ELF e_flags.

Patch by David Chisnall
His work was sponsored by: DARPA, AFRL

I made one small change to the testcase so that it uses
mips64-unknown-linux instead of mips4-unknown-linux.

This patch indirectly adds FeatureCondMov to FeatureMips64. This is ok
because it's supposed to be there anyway and it turns out that
FeatureCondMov is not a predicate of any instructions at the moment
(this is a bug that hasn't been noticed because there are no targets
without the conditional move instructions yet).

CC: theraven

Differential Revision: http://llvm-reviews.chandlerc.com/D3244

llvm-svn: 205530
This commit is contained in:
Daniel Sanders 2014-04-03 12:13:36 +00:00
parent 7bc582d828
commit baa1451096
5 changed files with 12 additions and 6 deletions
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0
lib/Target/Mips/AsmParser/.MipsAsmParser.cpp.swo Normal file
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2
lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
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@ -156,6 +156,8 @@ MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S,
EFlags |= ELF::EF_MIPS_ARCH_64R2;
else if (Features & Mips::FeatureMips64)
EFlags |= ELF::EF_MIPS_ARCH_64;
else if (Features & Mips::FeatureMips4)
EFlags |= ELF::EF_MIPS_ARCH_4;
else if (Features & Mips::FeatureMips32r2)
EFlags |= ELF::EF_MIPS_ARCH_32R2;
else if (Features & Mips::FeatureMips32)

8
lib/Target/Mips/Mips.td
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@ -63,10 +63,13 @@ def FeatureMips32r2 : SubtargetFeature<"mips32r2", "MipsArchVersion",
"Mips32r2", "Mips32r2 ISA Support",
[FeatureMips32, FeatureSEInReg, FeatureSwap,
FeatureFPIdx]>;
def FeatureMips4 : SubtargetFeature<"mips4", "MipsArchVersion",
"Mips4", "MIPS IV ISA Support",
[FeatureGP64Bit, FeatureFP64Bit,
FeatureCondMov]>;
def FeatureMips64 : SubtargetFeature<"mips64", "MipsArchVersion",
"Mips64", "Mips64 ISA Support",
[FeatureGP64Bit, FeatureFP64Bit,
FeatureMips32, FeatureFPIdx]>;
[FeatureMips4, FeatureMips32, FeatureFPIdx]>;
def FeatureMips64r2 : SubtargetFeature<"mips64r2", "MipsArchVersion",
"Mips64r2", "Mips64r2 ISA Support",
[FeatureMips64, FeatureMips32r2]>;
@ -96,6 +99,7 @@ class Proc<string Name, list<SubtargetFeature> Features>
def : Proc<"mips32", [FeatureMips32, FeatureO32]>;
def : Proc<"mips32r2", [FeatureMips32r2, FeatureO32]>;
def : Proc<"mips4", [FeatureMips4, FeatureN64]>;
def : Proc<"mips64", [FeatureMips64, FeatureN64]>;
def : Proc<"mips64r2", [FeatureMips64r2, FeatureN64]>;
def : Proc<"mips16", [FeatureMips16, FeatureO32]>;

5
lib/Target/Mips/MipsSubtarget.h
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@ -37,10 +37,7 @@ public:
};
protected:
enum MipsArchEnum {
Mips32, Mips32r2, Mips64, Mips64r2
};
enum MipsArchEnum { Mips32, Mips32r2, Mips4, Mips64, Mips64r2 };
// Mips architecture version
MipsArchEnum MipsArchVersion;

3
test/MC/Mips/elf_eflags.s
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@ -28,6 +28,9 @@
# RUN: llvm-mc -filetype=obj -triple mips64el-unknown-linux -mcpu=mips64r2 -mattr=-n64,o32 %s -o -| llvm-readobj -h | FileCheck --check-prefix=MIPS64EL-MIPS64R2-O32 %s
# MIPS64EL-MIPS64R2-O32: Flags [ (0x80001100)
# RUN: llvm-mc -filetype=obj -triple mips64-unknown-linux -mcpu=mips4 %s -o -| llvm-readobj -h | FileCheck --check-prefix=MIPS4 %s
# MIPS4: Flags [ (0x30000000)
# RUN: llvm-mc -filetype=obj -triple mips64el-unknown-linux -mcpu=mips64 %s -mattr=-n64,o32 -o -| llvm-readobj -h | FileCheck --check-prefix=MIPS64EL-MIPS64-O32 %s
# MIPS64EL-MIPS64-O32: Flags [ (0x60001100)