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[EABI] Add Clang support for -meabi flag

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The -meabi flag to control LLVM EABI version.

Without '-meabi' or with '-meabi default' imply LLVM triple default.
With '-meabi gnu' sets EABI GNU.
With '-meabi 4' or '-meabi 5' set EABI version 4 and 5 respectively.

A similar patch was introduced in LLVM.

Patch by Vinicius Tinti.

llvm-svn: 252463
This commit is contained in:
Renato Golin
2015-11-09 12:40:41 +00:00
parent 6d435f12f0
commit 4854d80c39
7 changed files with 66 additions and 0 deletions
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8
clang/lib/CodeGen/BackendUtil.cpp
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@@ -515,6 +515,14 @@ TargetMachine *EmitAssemblyHelper::CreateTargetMachine(bool MustCreateTM) {
Options.UseInitArray = CodeGenOpts.UseInitArray;
Options.DisableIntegratedAS = CodeGenOpts.DisableIntegratedAS;
Options.CompressDebugSections = CodeGenOpts.CompressDebugSections;
// Set EABI version.
Options.EABIVersion = llvm::StringSwitch<llvm::EABI>(CodeGenOpts.EABIVersion)
.Case("4", llvm::EABI::EABI4)
.Case("5", llvm::EABI::EABI5)
.Case("gnu", llvm::EABI::GNU)
.Default(llvm::EABI::Default);
Options.LessPreciseFPMADOption = CodeGenOpts.LessPreciseFPMAD;
Options.NoInfsFPMath = CodeGenOpts.NoInfsFPMath;
Options.NoNaNsFPMath = CodeGenOpts.NoNaNsFPMath;