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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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205530 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Sanders
2014-04-03 12:13:36 +00:00
parent 0b6dffa018
commit 8ef79fa708
5 changed files with 12 additions and 6 deletions
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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)