aboutsummaryrefslogtreecommitdiffstats
path: root/lib/Target/X86/X86VZeroUpper.cpp
Commit message (Collapse)AuthorAgeFilesLines
* Update aosp/master LLVM for rebase to r230699.Stephen Hines2015-03-231-14/+18
| | | | Change-Id: I2b5be30509658cb8266be782de0ab24f9099f9b9
* Update aosp/master LLVM for rebase to r222494.Stephen Hines2014-12-021-1/+1
| | | | Change-Id: Ic787f5e0124df789bd26f3f24680f45e678eef2d
* Update LLVM for 3.5 rebase (r209712).Stephen Hines2014-05-291-2/+4
| | | | Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
* Update to LLVM 3.5a.Stephen Hines2014-04-241-179/+167
| | | | Change-Id: Ifadecab779f128e62e430c2b4f6ddd84953ed617
* Merging r196391:Bill Wendling2013-12-071-4/+4
| | | | | | | | | | | | | | | ------------------------------------------------------------------------ r196391 | hliao | 2013-12-04 09:44:22 -0800 (Wed, 04 Dec 2013) | 5 lines [X86] Check YMM31/ZMM31 as well - No test case as there's no calling convention preserve YMM31/ZMM31 only ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@196653 91177308-0d34-0410-b5e6-96231b3b80d8
* Merging r196261:Bill Wendling2013-12-071-8/+27
| | | | | | | | | | | | | | | | | | | | | | | ------------------------------------------------------------------------ r196261 | hliao | 2013-12-03 01:17:32 -0800 (Tue, 03 Dec 2013) | 13 lines Enhance the fix of PR17631 - The fix to PR17631 fixes part of the cases where 'vzeroupper' should not be issued before 'call' insn. There're other cases where helper calls will be inserted not limited to epilog. These helper calls do not follow the standard calling convention and won't clobber any YMM registers. (So far, all call conventions will clobber any or part of YMM registers.) This patch enhances the previous fix to cover more cases 'vzerosupper' should not be inserted by checking if that function call won't clobber any YMM registers and skipping it if so. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@196652 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR17631Michael Liao2013-10-231-1/+10
| | | | | | | | | | | - Skip instructions added in prolog. For specific targets, prolog may insert helper function calls (e.g. _chkstk will be called when there're more than 4K bytes allocated on stack). However, these helpers don't use/def YMM/XMM registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193261 91177308-0d34-0410-b5e6-96231b3b80d8
* I'm starting to commit KNL backend. I'll push patches one-by-one. This patch ↵Elena Demikhovsky2013-07-241-5/+10
| | | | | | | | | includes support for the extended register set XMM16-31, YMM16-31, ZMM0-31. The full ISA you can see here: http://software.intel.com/en-us/intel-isa-extensions git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187030 91177308-0d34-0410-b5e6-96231b3b80d8
* Prevent insertion of "vzeroupper" before call that preserves YMM registers, ↵Elena Demikhovsky2013-02-131-0/+10
| | | | | | since a caller uses preserved registers across the call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175043 91177308-0d34-0410-b5e6-96231b3b80d8
* Check for empty YMM use-def lists in X86VZeroUpper.Jakob Stoklund Olesen2012-10-171-1/+1
| | | | | | | | | | | The previous MRI.isPhysRegUsed(YMM0) would also return true when the function contains a call to a function that may clobber YMM0. That's most of them. Checking the use-def chains allows us to skip functions that don't explicitly mention YMM registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166110 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't cache the MBB in the class. Its only used by one function. Change a ↵Craig Topper2012-08-221-5/+3
| | | | | | for loop over operands to use unsigned instead of int. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162344 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark a function as static since it doesn't use anything in the class.Craig Topper2012-08-221-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162342 91177308-0d34-0410-b5e6-96231b3b80d8
* Whitespace.Chad Rosier2012-08-011-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161122 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix typos found by http://github.com/lyda/misspell-checkBenjamin Kramer2012-06-021-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157885 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert some uses of XXXRegisterClass to &XXXRegClass. No functional change ↵Craig Topper2012-04-201-1/+1
| | | | | | since they are equivalent. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155186 91177308-0d34-0410-b5e6-96231b3b80d8
* Make all pointers to TargetRegisterClass const since they are all pointers ↵Craig Topper2012-02-221-1/+1
| | | | | | to static data that should not be modified. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151134 91177308-0d34-0410-b5e6-96231b3b80d8
* Add bundle aware API for querying instruction properties and switch the codeEvan Cheng2011-12-071-1/+1
| | | | | | | | | | | | | | | generator to it. For non-bundle instructions, these behave exactly the same as the MC layer API. For properties like mayLoad / mayStore, look into the bundle and if any of the bundled instructions has the property it would return true. For properties like isPredicable, only return true if *all* of the bundled instructions have the property. For properties like canFoldAsLoad, isCompare, conservatively return false for bundles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146026 91177308-0d34-0410-b5e6-96231b3b80d8
* Enhanced vzeroupper insertion pass that avoids inserting vzeroupper where it ↵Eli Friedman2011-11-041-27/+207
| | | | | | | | | | is unnecessary through local analysis. Patch from Bruno Cardoso Lopes, with some additional changes. I'm going to wait for any review comments and perform some additional testing before turning this on by default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143750 91177308-0d34-0410-b5e6-96231b3b80d8
* Use internal storage for command line option.Benjamin Kramer2011-09-031-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139079 91177308-0d34-0410-b5e6-96231b3b80d8
* Introduce a pass to insert vzeroupper instructions to avoid AVX toBruno Cardoso Lopes2011-08-231-0/+105
SSE transition penalty. The pass is enabled through the "x86-use-vzeroupper" llc command line option. This is only the first step (very naive and conservative one) to sketch out the idea, but proper DFA is coming next to allow smarter decisions. Comments and ideas now and in further commits will be very appreciated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138317 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.1 at 2025-01-07 05:00:12 +0000