summaryrefslogtreecommitdiff
path: root/test/CodeGen/X86/jump_sign.ll
Commit message (Collapse)AuthorAge
* Disambiguate function names in some CodeGen tests. (Some tests were using ↵Stephen Lin2013-07-18
| | | | | | function names that also were names of instructions and/or doing other unusual things that were making the test not amenable to otherwise scriptable pattern matching.) No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186621 91177308-0d34-0410-b5e6-96231b3b80d8
* Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to ↵Stephen Lin2013-07-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186280 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier ↵Stephen Lin2013-07-13
| | | | | | | | | | | debugging. No functionality change and all tests pass after conversion. This was done with the following sed invocation to catch label lines demarking function boundaries: sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186258 91177308-0d34-0410-b5e6-96231b3b80d8
* (For X86) Enhancement to add-carray/sub-borrow (adc/sbb) optimization.Shuxin Yang2012-10-31
| | | | | | | | | | | | | The adc/sbb optimization is to able to convert following expression into a single adc/sbb instruction: (ult) ... = x + 1 // where the ult is unsigned-less-than comparison (ult) ... = x - 1 This change is to flip the "x >u y" (i.e. ugt comparison) in order to expose the adc/sbb opportunity. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167180 91177308-0d34-0410-b5e6-96231b3b80d8
* Testcase for r164835Manman Ren2012-09-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164842 91177308-0d34-0410-b5e6-96231b3b80d8
* Add some cases to x86 OptimizeCompare to handle DEC and INC, too.Jan Wen Voung2012-09-17
| | | | | | While we are setting the earlier def to true, also make it live. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164056 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: enable CSE between CMP and SUBManman Ren2012-08-08
| | | | | | | | | | | | | | | We perform the following: 1> Use SUB instead of CMP for i8,i16,i32 and i64 in ISel lowering. 2> Modify MachineCSE to correctly handle implicit defs. 3> Convert SUB back to CMP if possible at peephole. Removed pattern matching of (a>b) ? (a-b):0 and like, since they are handled by peephole now. rdar://11873276 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161462 91177308-0d34-0410-b5e6-96231b3b80d8
* X86 Peephole: fix PR13475 in optimizeCompare.Manman Ren2012-07-28
| | | | | | | | | | It is possible that an instruction can use and update EFLAGS. When checking the safety, we should check the usage of EFLAGS first before declaring it is safe to optimize due to the update. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160912 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable rematerialization in TwoAddressInstructionPass.Manman Ren2012-07-25
| | | | | | | | | | | | It is redundant; RegisterCoalescer will do the remat if it can't eliminate the copy. Collected instruction counts before and after this. A few extra instructions are generated due to spilling but it is normal to see these kinds of changes with almost any small codegen change, according to Jakob. This also fixed rdar://11830760 where xor is expected instead of movi0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160749 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: remove redundant cmp against zero.Manman Ren2012-07-18
| | | | | | | | | | Updated OptimizeCompare in peephole to remove redundant cmp against zero. We only remove Compare if CF and OF are not used. rdar://11855129 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160454 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: Update to peephole optimization to move Movr0 before (Sub, Cmp) pair.Manman Ren2012-07-11
| | | | | | | | When Movr0 is between sub and cmp, we move Movr0 before sub if it enables removal of Cmp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160066 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: implement functions to analyze & synthesize CMOV|SET|JccManman Ren2012-07-09
| | | | | | | | | | | | getCondFromSETOpc, getCondFromCMovOpc, getSETFromCond, getCMovFromCond No functional change intended. If we want to update the condition code of CMOV|SET|Jcc, we first analyze the opcode to get the condition code, then update the condition code, finally synthesize the new opcode form the new condition code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159955 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: Fix optimizeCompare to correctly check safe condition.Manman Ren2012-07-07
| | | | | | | | | It is safe if EFLAGS is killed or re-defined. When we are done with the basic block, check whether EFLAGS is live-out. Do not optimize away cmp if EFLAGS is live-out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159888 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: peephole optimization to remove cmp instructionManman Ren2012-07-06
| | | | | | | | | | For each Cmp, we check whether there is an earlier Sub which make Cmp redundant. We handle the case where SUB operates on the same source operands as Cmp, including the case where the two source operands are swapped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159838 91177308-0d34-0410-b5e6-96231b3b80d8
* Test case for r158160Manman Ren2012-06-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158218 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: replace SUB with CMP if possibleManman Ren2012-06-07
| | | | | | | | | | | | | | | | | | | This patch will optimize the following movq %rdi, %rax subq %rsi, %rax cmovsq %rsi, %rdi movq %rdi, %rax to cmpq %rsi, %rdi cmovsq %rsi, %rdi movq %rdi, %rax Perform this optimization if the actual result of SUB is not used. rdar: 11540023 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158126 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r157755.Manman Ren2012-06-06
| | | | | | | | | The commit is intended to fix rdar://11540023. It is implemented as part of peephole optimization. We can actually implement this in the SelectionDAG lowering phase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158122 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r157831Manman Ren2012-06-03
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157896 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: peephole optimization to remove cmp instructionManman Ren2012-06-01
| | | | | | | | | | | | | | | | This patch will optimize the following: sub r1, r3 cmp r3, r1 or cmp r1, r3 bge L1 TO sub r1, r3 bge L1 or ble L1 If the branch instruction can use flag from "sub", then we can eliminate the "cmp" instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157831 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: replace SUB with CMP if possibleManman Ren2012-05-31
| | | | | | | | | | | | | | | | | | | This patch will optimize the following movq %rdi, %rax subq %rsi, %rax cmovsq %rsi, %rdi movq %rdi, %rax to cmpq %rsi, %rdi cmovsq %rsi, %rdi movq %rdi, %rax Perform this optimization if the actual result of SUB is not used. rdar: 11540023 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157755 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix two-address pass's aggressive instruction commuting heuristics. It's meantEvan Cheng2012-05-03
| | | | | | | | | | | | | | | | | | | | | | | to catch cases like: %reg1024<def> = MOV r1 %reg1025<def> = MOV r0 %reg1026<def> = ADD %reg1024, %reg1025 r0 = MOV %reg1026 By commuting ADD, it let coalescer eliminate all of the copies. However, there was a bug in the heuristics where it ended up commuting the ADD in: %reg1024<def> = MOV r0 %reg1025<def> = MOV 0 %reg1026<def> = ADD %reg1024, %reg1025 r0 = MOV %reg1026 That did no benefit but rather ensure the last MOV would not be coalesced. rdar://11355268 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156048 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: optimization for max-like structManman Ren2012-05-01
| | | | | | | | | | | | | | | | | | | | | | | | | This patch will optimize the following cases on X86 (a > b) ? (a-b) : 0 (a >= b) ? (a-b) : 0 (b < a) ? (a-b) : 0 (b <= a) ? (a-b) : 0 FROM movl %edi, %ecx subl %esi, %ecx cmpl %edi, %esi movl $0, %eax cmovll %ecx, %eax TO xorl %eax, %eax subl %esi, %edi cmovll %eax, %edi movl %edi, %eax rdar: 10734411 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155919 91177308-0d34-0410-b5e6-96231b3b80d8
* test/CodeGen/X86/jump_sign.ll: Add -mcpu=pentiumpro for non-x86 hosts. It ↵NAKAMURA Takumi2012-01-04
| | | | | | uses "cmov". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147521 91177308-0d34-0410-b5e6-96231b3b80d8
* For x86, canonicalize maxEvan Cheng2012-01-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | (x > y) ? x : y => (x >= y) ? x : y So for something like (x - y) > 0 : (x - y) ? 0 It will be (x - y) >= 0 : (x - y) ? 0 This makes is possible to test sign-bit and eliminate a comparison against zero. e.g. subl %esi, %edi testl %edi, %edi movl $0, %eax cmovgl %edi, %eax => xorl %eax, %eax subl %esi, $edi cmovsl %eax, %edi rdar://10633221 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147512 91177308-0d34-0410-b5e6-96231b3b80d8
* Eliminate more uses of llvm-as and llvm-dis.Dan Gohman2009-09-08
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove llvm-upgrade and update tests.Tanya Lattner2008-02-21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47432 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the llvm-upgrade program to upgrade llvm assembly.Reid Spencer2006-12-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32115 91177308-0d34-0410-b5e6-96231b3b80d8
* The sense of this branch was backwardsChris Lattner2006-09-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30296 91177308-0d34-0410-b5e6-96231b3b80d8
* new testcaseChris Lattner2006-09-13
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30282 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-12 11:04:41 +0000