summaryrefslogtreecommitdiffstats
path: root/llvm/test/CodeGen/Thumb2/2009-08-06-SpDecBug.ll
Commit message (Collapse)AuthorAgeFilesLines
* ARM: When spilling extra registers for alignment, prefer low registers on ↵Peter Collingbourne2015-04-231-2/+2
| | | | | | | | | | | all Thumb targets. This makes it more likely that we can use the 16-bit push and pop instructions on Thumb-2, saving around 4 bytes per function. Differential Revision: http://reviews.llvm.org/D9165 llvm-svn: 235637
* ARM / x86_64 varargs: Don't save regparms in prologue without va_startReid Kleckner2014-08-221-0/+3
| | | | | | | | | | | | There's no need to do this if the user doesn't call va_start. In the future, we're going to have thunks that forward these register parameters with musttail calls, and they won't need these spills for handling va_start. Most of the test suite changes are adding va_start calls to existing tests to keep things working. llvm-svn: 216294
* ARM & AArch64: make use of common cmpxchg idioms after expansionTim Northover2014-05-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The C and C++ semantics for compare_exchange require it to return a bool indicating success. This gets mapped to LLVM IR which follows each cmpxchg with an icmp of the value loaded against the desired value. When lowered to ldxr/stxr loops, this extra comparison is redundant: its results are implicit in the control-flow of the function. This commit makes two changes: it replaces that icmp with appropriate PHI nodes, and then makes sure earlyCSE is called after expansion to actually make use of the opportunities revealed. I've also added -{arm,aarch64}-enable-atomic-tidy options, so that existing fragile tests aren't perturbed too much by the change. Many of them either rely on undef/unreachable too pervasively to be restored to something well-defined (particularly while making sure they test the same obscure assert from many years ago), or depend on a particular CFG shape, which is disrupted by SimplifyCFG. rdar://problem/16227836 llvm-svn: 209883
* Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to ↵Stephen Lin2013-07-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | function definitions for more informative error messages. No functionality change and all updated tests passed locally. This update was done with the following bash script: find test/CodeGen -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc.*debug" $NAME; then TEMP=`mktemp -t temp` cp $NAME $TEMP sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \ while read FUNC; do sed -i '' "s/;\(.*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC: *\$/;\1\2-LABEL:\3$FUNC:/g" $TEMP done sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP mv $TEMP $NAME fi done llvm-svn: 186280
* Roll r127459 back in:Cameron Zwarich2011-03-111-1/+1
| | | | | | | | | | | Optimize trivial branches in CodeGenPrepare, which often get created from the lowering of objectsize intrinsics. Unfortunately, a number of tests were relying on llc not optimizing trivial branches, so I had to add an option to allow them to continue to test what they originally tested. This fixes <rdar://problem/8785296> and <rdar://problem/9112893>. llvm-svn: 127498
* Revert r127459, "Optimize trivial branches in CodeGenPrepare, which often getDaniel Dunbar2011-03-111-1/+1
| | | | | | created from the", it broke some GCC test suite tests. llvm-svn: 127477
* Optimize trivial branches in CodeGenPrepare, which often get created from theCameron Zwarich2011-03-111-1/+1
| | | | | | | | | | lowering of objectsize intrinsics. Unfortunately, a number of tests were relying on llc not optimizing trivial branches, so I had to add an option to allow them to continue to test what they originally tested. This fixes <rdar://problem/8785296> and <rdar://problem/9112893>. llvm-svn: 127459
* Fix epilogue codegen to avoid leaving the stack pointer in an invalidEvan Cheng2010-11-221-2/+7
| | | | | | | | | | | | | | | | | state. Previously Thumb2 would restore sp from fp like this: mov sp, r7 sub, sp, #4 If an interrupt is taken after the 'mov' but before the 'sub', callee-saved registers might be clobbered by the interrupt handler. Instead, try restoring directly from sp: add sp, #4 Or, if necessary (with VLA, etc.) use a scratch register to compute sp and then restore it: sub.w r4, r7, #8 mov sp, r7 rdar://8465407 llvm-svn: 119977
* Remove the arm_aapcscc marker from the tests. It is the defaultRafael Espindola2010-06-151-5/+5
| | | | | | for the linux targets. llvm-svn: 106029
* More consistent thumb1 asm printing.Evan Cheng2009-11-191-1/+1
| | | | llvm-svn: 89328
* Eliminate more uses of llvm-as and llvm-dis.Dan Gohman2009-09-091-1/+1
| | | | llvm-svn: 81293
* It turns out most of the thumb2 instructions are not allowed to touch SP. ↵Evan Cheng2009-08-071-0/+24
The semantics of such instructions are unpredictable. We have just been lucky that tests have been passing. This patch takes pain to ensure all the PEI lowering code does the right thing when lowering frame indices, insert code to manipulate stack pointers, etc. It's also custom lowering dynamic stack alloc into pseudo instructions so we can insert the right instructions at scheduling time. This fixes PR4659 and PR4682. llvm-svn: 78361
OpenPOWER on IntegriCloud