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| author | Hans Wennborg <hans@hanshq.net> | 2015-01-26 23:17:18 +0000 |
|---|---|---|
| committer | Hans Wennborg <hans@hanshq.net> | 2015-01-26 23:17:18 +0000 |
| commit | c47313c631cc4117c76a1e1c34203370392655ea (patch) | |
| tree | 6fa9f6d7c013c383e779302c48b116182cad93a4 /lib | |
| parent | a9a4f6285fa41976db581983480427f894fc206d (diff) | |
Merging r227062:
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r227062 | rengolin | 2015-01-25 15:17:48 -0800 (Sun, 25 Jan 2015) | 10 lines
Allows Clang to use LLVM's fixes-x18 option
This patch allows clang to have llvm reserve the x18
platform register on AArch64. FreeBSD will use this in the kernel for
per-cpu data but has no need to reserve this register in userland so
will need this flag to reserve it.
This uses llvm r226664 to allow this register to be reserved.
Patch by Andrew Turner.
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_36@227151 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Driver/Tools.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp index d625c0e3e2..810a4d7caa 100644 --- a/lib/Driver/Tools.cpp +++ b/lib/Driver/Tools.cpp @@ -958,6 +958,11 @@ void Clang::AddAArch64TargetArgs(const ArgList &Args, if (A->getOption().matches(options::OPT_mno_global_merge)) CmdArgs.push_back("-mno-global-merge"); } + + if (Args.hasArg(options::OPT_ffixed_x18)) { + CmdArgs.push_back("-backend-option"); + CmdArgs.push_back("-aarch64-reserve-x18"); + } } // Get CPU and ABI names. They are not independent |