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| author | Preston Gurd <preston.gurd@intel.com> | 2013-03-27 19:14:02 +0000 |
|---|---|---|
| committer | Preston Gurd <preston.gurd@intel.com> | 2013-03-27 19:14:02 +0000 |
| commit | 1edadea42f6f5c393b4fdb9d7ce1cf7eb9c24ab4 (patch) | |
| tree | 0703e20d41246fa36a72779d0d1ba5b58b6ee2d7 /lib/Target/X86/X86Subtarget.cpp | |
| parent | e915047fed99221afb8c540d8a7e81038a6483f1 (diff) | |
For the current Atom processor, the fastest way to handle a call
indirect through a memory address is to load the memory address into
a register and then call indirect through the register.
This patch implements this improvement by modifying SelectionDAG to
force a function address which is a memory reference to be loaded
into a virtual register.
Patch by Sriram Murali.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178171 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86Subtarget.cpp')
| -rw-r--r-- | lib/Target/X86/X86Subtarget.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp index 4b368b4901..6e66c1aa96 100644 --- a/lib/Target/X86/X86Subtarget.cpp +++ b/lib/Target/X86/X86Subtarget.cpp @@ -458,6 +458,7 @@ void X86Subtarget::initializeEnvironment() { HasSlowDivide = false; PostRAScheduler = false; PadShortFunctions = false; + CallRegIndirect = false; stackAlignment = 4; // FIXME: this is a known good value for Yonah. How about others? MaxInlineSizeThreshold = 128; |