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* Correct the value of LowBits in srem and urem handling inDan Gohman2008-05-06
| | | | | | | ComputeMaskedBits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50692 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a crash when threading a block that includes a MRV call result.Chris Lattner2008-05-05
| | | | | | | | | | DemoteRegToStack doesn't work with MRVs yet, because it relies on the ability to load/store things. This fixes PR2285. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50667 91177308-0d34-0410-b5e6-96231b3b80d8
* Added addition atomic instrinsics and, or, xor, min, and max.Mon P Wang2008-05-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50663 91177308-0d34-0410-b5e6-96231b3b80d8
* no need for eh infoChris Lattner2008-05-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50658 91177308-0d34-0410-b5e6-96231b3b80d8
* Add AsmPrinter support for emitting a directive to declare thatDan Gohman2008-05-05
| | | | | | | | | | the code being generated does not require an executable stack. Also, add target-specific code to make use of this on Linux on x86. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50634 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR1098 by correcting the postdominators analysis.Owen Anderson2008-05-04
| | | | | | | Patch by Florian Brandner. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50628 91177308-0d34-0410-b5e6-96231b3b80d8
* Select vector shift with non-immediate i32 shift amount operand by first ↵Evan Cheng2008-05-04
| | | | | | moving the operand into the right register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50619 91177308-0d34-0410-b5e6-96231b3b80d8
* Add separate intrinsics for MMX / SSE shifts with i32 integer operands. This ↵Evan Cheng2008-05-03
| | | | | | allow us to simplify the horribly complicated matching code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50601 91177308-0d34-0410-b5e6-96231b3b80d8
* verify builtin optimization works like gcc.Chris Lattner2008-05-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50594 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a mistake in the computation of leading zeros for udiv.Dan Gohman2008-05-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50591 91177308-0d34-0410-b5e6-96231b3b80d8
* strength reduce exp2 into ldexp, rdar://5852514Chris Lattner2008-05-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50586 91177308-0d34-0410-b5e6-96231b3b80d8
* specify an arch for non-x86 hosts.Chris Lattner2008-05-02
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50576 91177308-0d34-0410-b5e6-96231b3b80d8
* Update old-style syntax in some "not grep" tests.Dan Gohman2008-05-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50560 91177308-0d34-0410-b5e6-96231b3b80d8
* New test for bug fixed in 50545.Dale Johannesen2008-05-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50548 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix an overaggressive SimplifyDemandedBits optimization on urem. ThisDan Gohman2008-05-01
| | | | | | | fixes the 254.gap regression on x86 and the 403.gcc regression on x86-64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50537 91177308-0d34-0410-b5e6-96231b3b80d8
* Adding testcase.Bill Wendling2008-05-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50536 91177308-0d34-0410-b5e6-96231b3b80d8
* don't randomly miscompile seto/setuo just because we are in Chris Lattner2008-05-01
| | | | | | | | | | ffastmath mode. This fixes rdar://5902801, a miscompilation of gcc.dg/builtins-8.c. Bill, please pull this into Tak. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50523 91177308-0d34-0410-b5e6-96231b3b80d8
* fix typoChris Lattner2008-05-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50519 91177308-0d34-0410-b5e6-96231b3b80d8
* instcombine does memset optzns.Chris Lattner2008-05-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50518 91177308-0d34-0410-b5e6-96231b3b80d8
* simplifylibcalls doesn't optimize llvm.memmove, instcombine does.Chris Lattner2008-05-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50517 91177308-0d34-0410-b5e6-96231b3b80d8
* move some tests from libcall optimizer suite.Chris Lattner2008-05-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50516 91177308-0d34-0410-b5e6-96231b3b80d8
* Really commit the test checking the argument lowering behaviour on x86-64 :).Arnold Schwaighofer2008-04-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50478 91177308-0d34-0410-b5e6-96231b3b80d8
* Tail call optimization improvements:Arnold Schwaighofer2008-04-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Move platform independent code (lowering of possibly overwritten arguments, check for tail call optimization eligibility) from target X86ISelectionLowering.cpp to TargetLowering.h and SelectionDAGISel.cpp. Initial PowerPC tail call implementation: Support ppc32 implemented and tested (passes my tests and test-suite llvm-test). Support ppc64 implemented and half tested (passes my tests). On ppc tail call optimization is performed if caller and callee are fastcc call is a tail call (in tail call position, call followed by ret) no variable argument lists or byval arguments option -tailcallopt is enabled Supported: * non pic tail calls on linux/darwin * module-local tail calls on linux(PIC/GOT)/darwin(PIC) * inter-module tail calls on darwin(PIC) If constraints are not met a normal call will be emitted. A test checking the argument lowering behaviour on x86-64 was added. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50477 91177308-0d34-0410-b5e6-96231b3b80d8
* Move this test to LoopDeletion, where it now passes.Owen Anderson2008-04-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50474 91177308-0d34-0410-b5e6-96231b3b80d8
* move lowering of llvm.memset -> store from simplify libcalls Chris Lattner2008-04-30
| | | | | | | to instcombine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50472 91177308-0d34-0410-b5e6-96231b3b80d8
* no reason for simplifylibcalls to simplify intrinsics, instcombine doesChris Lattner2008-04-30
| | | | | | | a fine job. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50470 91177308-0d34-0410-b5e6-96231b3b80d8
* remove redundant check.Chris Lattner2008-04-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50469 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a bug in memcpyopt where the memcpy-memcpy transform was never being ↵Owen Anderson2008-04-29
| | | | | | | | | | applied because we were checking for it in the wrong order. This caused a miscompilation because the return slot optimization assumes that the call it is dealing with is NOT a memcpy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50444 91177308-0d34-0410-b5e6-96231b3b80d8
* don't eliminate load from volatile value on paths where the load is dead.Chris Lattner2008-04-29
| | | | | | | This fixes the second half of PR2262 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50430 91177308-0d34-0410-b5e6-96231b3b80d8
* make this test reduced and *valid*Chris Lattner2008-04-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50429 91177308-0d34-0410-b5e6-96231b3b80d8
* fix a subtle volatile handling bug.Chris Lattner2008-04-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50428 91177308-0d34-0410-b5e6-96231b3b80d8
* new testcase for PR2094. The inline asms should not pin allocas to theChris Lattner2008-04-29
| | | | | | | stack anymore. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50397 91177308-0d34-0410-b5e6-96231b3b80d8
* don't delete the last store to an alloca if the store is volatile.Chris Lattner2008-04-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50390 91177308-0d34-0410-b5e6-96231b3b80d8
* make the vector conversion magic handle multiple results.Chris Lattner2008-04-29
| | | | | | | | | | | | | | | | | | | | | | We now compile test2/test3 to: _test2: ## InlineAsm Start set %xmm0, %xmm1 ## InlineAsm End addps %xmm1, %xmm0 ret _test3: ## InlineAsm Start set %xmm0, %xmm1 ## InlineAsm End paddd %xmm1, %xmm0 ret as expected. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50389 91177308-0d34-0410-b5e6-96231b3b80d8
* add support for multiple return values in inline asm. This is a step Chris Lattner2008-04-29
| | | | | | | | | | | | | | | | | | | towards PR2094. It now compiles the attached .ll file to: _sad16_sse2: movslq %ecx, %rax ## InlineAsm Start %ecx %rdx %rax %rax %r8d %rdx %rsi ## InlineAsm End ## InlineAsm Start set %eax ## InlineAsm End ret which is pretty decent for a 3 output, 4 input asm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50386 91177308-0d34-0410-b5e6-96231b3b80d8
* Another extract_subreg coalescing bug.Evan Cheng2008-04-29
| | | | | | | | | e.g. vr1024<2> extract_subreg vr1025, 2 If vr1024 do not have the same register class as vr1025, it's not safe to coalesce this away. For example, vr1024 might be a GPR32 while vr1025 might be a GPR64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50385 91177308-0d34-0410-b5e6-96231b3b80d8
* Add -march=x86.Evan Cheng2008-04-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50380 91177308-0d34-0410-b5e6-96231b3b80d8
* Update and_ops.ll according to the recent dagcombiner changes.Dan Gohman2008-04-28
| | | | | | | | | Add a new test, and_ops_more.ll, which is XFAIL'd, to record the parts of and_ops.ll that were affected by this change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50379 91177308-0d34-0410-b5e6-96231b3b80d8
* Test case.Evan Cheng2008-04-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50377 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix DSE to not eliminate volatile loads with no uses.Dan Gohman2008-04-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50370 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach InstCombine's ComputeMaskedBits what SelectionDAG'sDan Gohman2008-04-28
| | | | | | | | | | | | ComputeMaskedBits knows about cttz, ctlz, and ctpop. Teach SelectionDAG's ComputeMaskedBits what InstCombine's knows about SRem. And teach them both some things about high bits in Mul, UDiv, URem, and Sub. This allows instcombine and dagcombine to eliminate sign-extension operations in several new cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50358 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR2256, yet another miscompilation in simplifycfg of iChris Lattner2008-04-28
| | | | | | | | | multiple return values. Bill, please pull this into Tak. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50332 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement a signficant optimization for inline asm:Chris Lattner2008-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When choosing between constraints with multiple options, like "ir", test to see if we can use the 'i' constraint and go with that if possible. This produces more optimal ASM in all cases (sparing a register and an instruction to load it), and fixes inline asm like this: void test () { asm volatile (" %c0 %1 " : : "imr" (42), "imr"(14)); } Previously we would dump "42" into a memory location (which is ok for the 'm' constraint) which would cause a problem because the 'c' modifier is not valid on memory operands. Isn't it great how inline asm turns 'missed optimization' into 'compile failed'?? Incidentally, this was the todo in PowerPC/2007-04-24-InlineAsm-I-Modifier.ll Please do NOT pull this into Tak. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50315 91177308-0d34-0410-b5e6-96231b3b80d8
* When SRoA'ing a global variable, make sure the new globals get the Chris Lattner2008-04-26
| | | | | | | | | | appropriate alignment. This fixes a miscompilation of 252.eon on x86-64 (rdar://5891920). Bill, please pull this into Tak. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50308 91177308-0d34-0410-b5e6-96231b3b80d8
* Feedback from chrisNate Begeman2008-04-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50305 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a testcase for the recent "handle variable vector insert elt in mem" patchNate Begeman2008-04-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50303 91177308-0d34-0410-b5e6-96231b3b80d8
* Update tests.Evan Cheng2008-04-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50293 91177308-0d34-0410-b5e6-96231b3b80d8
* Special handling for MMX values being passed in either GPR64 or lower ↵Evan Cheng2008-04-25
| | | | | | 64-bits of XMM registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50289 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the code from CodeGenPrepare that moved getresult instructionsDan Gohman2008-04-25
| | | | | | | | | | | | to the block that defines their operands. This doesn't work in the case that the operand is an invoke, because invoke is a terminator and must be the last instruction in a block. Replace it with support in SelectionDAGISel for copying struct values into sequences of virtual registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50279 91177308-0d34-0410-b5e6-96231b3b80d8
* new testcaseChris Lattner2008-04-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50274 91177308-0d34-0410-b5e6-96231b3b80d8
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