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* InstCombine: Turn icmp + sext into bitwise/integer ops when the input has ↵Benjamin Kramer2011-04-011-0/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | only one unknown bit. int test1(unsigned x) { return (x&8) ? 0 : -1; } int test3(unsigned x) { return (x&8) ? -1 : 0; } before (x86_64): _test1: andl $8, %edi cmpl $1, %edi sbbl %eax, %eax ret _test3: andl $8, %edi cmpl $1, %edi sbbl %eax, %eax notl %eax ret after: _test1: shrl $3, %edi andl $1, %edi leal -1(%rdi), %eax ret _test3: shll $28, %edi movl %edi, %eax sarl $31, %eax ret llvm-svn: 128732
* InstCombine: Move (sext icmp) transforms into their own method. No intended ↵Benjamin Kramer2011-04-012-37/+43
| | | | | | functionality change. llvm-svn: 128731
* Add comments.Evan Cheng2011-04-011-2/+4
| | | | llvm-svn: 128730
* Assign node order numbers to results of call instruction lowering. This ↵Evan Cheng2011-04-011-4/+8
| | | | | | should improve src line debug info when sdisel is used. rdar://9199118 llvm-svn: 128728
* Modifies MipsAsmPrinter::isBlockOnlyReachableByFallthrough so that it ↵Akira Hatanaka2011-04-011-1/+26
| | | | | | handles delay slots correctly. llvm-svn: 128724
* Fix LDRi12 immediate operand, which was changed to be the second operand in ↵Johnny Chen2011-04-011-3/+4
| | | | | | | | $addrmode_imm12 => (ops GPR:$base, i32imm:$offsimm). rdar://problem/9219356 llvm-svn: 128722
* Add code for analyzing FP branches. Clean up branch Analysis functions.Akira Hatanaka2011-04-012-223/+138
| | | | llvm-svn: 128718
* Initialize HasVMLxForwarding.Benjamin Kramer2011-04-011-0/+1
| | | | llvm-svn: 128709
* Various Instructions' resizeOperands() methods are only used to grow theJay Foad2011-04-011-54/+16
| | | | | | list of operands. Simplify and rename them accordingly. llvm-svn: 128708
* While testing dragonegg I noticed that isCastable and getCastOpcodeDuncan Sands2011-04-011-4/+12
| | | | | | | | had gotten out of sync: isCastable didn't think it was possible to cast the x86_mmx type to anything, while it did think it possible to cast an i64 to x86_mmx. llvm-svn: 128705
* Issue libcalls __udivmod*i4 / __divmod*i4 for div / rem pairs.Evan Cheng2011-04-013-19/+164
| | | | | | rdar://8911343 llvm-svn: 128696
* Remove unused variablesMatt Beaumont-Gay2011-04-011-3/+1
| | | | llvm-svn: 128692
* Apply again changes to support ARM memory asm parsing. I removedBruno Cardoso Lopes2011-03-319-76/+329
| | | | | | | | | | | | | | all LDR/STR changes and left them to a future patch. Passing all checks now. - Implement asm parsing support for LDRT, LDRBT, STRT, STRBT and fix the encoding wherever is possible. - Add a new encoding bit to describe the index mode used and teach printAddrMode2Operand to check by the addressing mode which index mode to print. - Testcases llvm-svn: 128689
* The basic register allocator must also use the inline spiller.Jakob Stoklund Olesen2011-03-311-1/+1
| | | | | | | It is using a trivial rewriter that doesn't know how to insert spill code requested by the standard spiller. llvm-svn: 128688
* Provide a legal pointer register class when targeting thumb1.Jakob Stoklund Olesen2011-03-312-0/+7
| | | | | | The LocalStackSlotAllocation pass was creating illegal registers. llvm-svn: 128687
* Instcombile optimization: extractelement(cast) -> cast(extractelement)Nadav Rotem2011-03-311-1/+9
| | | | llvm-svn: 128683
* InstCombine: APFloat can't perform arithmetic on PPC double doubles, don't ↵Benjamin Kramer2011-03-311-2/+4
| | | | | | | | even try. Thanks Eli! llvm-svn: 128676
* Distribute (A + B) * C to (A * C) + (B * C) to make use of NEON multiplierEvan Cheng2011-03-313-3/+53
| | | | | | | | | | | accumulator forwarding: vadd d3, d0, d1 vmul d3, d3, d2 => vmul d3, d0, d2 vmla d3, d1, d2 llvm-svn: 128665
* Fix single word and unsigned byte data transfer instruction encodings so thatJohnny Chen2011-03-311-0/+2
| | | | | | | | Inst{4} = 0. rdar://problem/9213022 llvm-svn: 128662
* Added support for FP conditional move instructions and fixed bugs in ↵Akira Hatanaka2011-03-317-285/+377
| | | | | | handling of FP comparisons. llvm-svn: 128650
* Don't completely eliminate identity copies that also modify super register ↵Jakob Stoklund Olesen2011-03-311-6/+12
| | | | | | | | | liveness. Turn them into noop KILL instructions instead. This lets the scavenger know when super-registers are killed and defined. llvm-svn: 128645
* Add BLXi to the instruction table for disassembly purpose.Johnny Chen2011-03-312-2/+23
| | | | | | | | A8.6.23 BLX (immediate) rdar://problem/9212921 llvm-svn: 128644
* Allow kill flags on two-address instructions. They are harmless.Jakob Stoklund Olesen2011-03-311-6/+2
| | | | llvm-svn: 128643
* Mark all uses as <undef> when joining a copy.Jakob Stoklund Olesen2011-03-313-8/+20
| | | | | | | | | | | | This way, shrinkToUses() will ignore the instruction that is about to be deleted, and we avoid leaving invalid live ranges that SplitKit doesn't like. Fix a misunderstanding in MachineVerifier about <def,undef> operands. The <undef> flag is valid on def operands where it has the same meaning as <undef> on a use operand. It only applies to sub-register defines which also read the full register. llvm-svn: 128642
* Remove dead code.Devang Patel2011-03-311-5/+1
| | | | llvm-svn: 128639
* Revert r128632 again, until I figure out what break the testsBruno Cardoso Lopes2011-03-319-322/+87
| | | | llvm-svn: 128635
* Fix bug found by valgrind.Jakob Stoklund Olesen2011-03-311-1/+1
| | | | llvm-svn: 128634
* Add XCore intrinsics for initializing / starting / synchronizing threads.Richard Osborne2011-03-311-6/+39
| | | | llvm-svn: 128633
* Reapply r128585 without generating a lib depedency cycle. An updated log:Bruno Cardoso Lopes2011-03-319-87/+322
| | | | | | | | | | | | | - Implement asm parsing support for LDRT, LDRBT, STRT, STRBT and {STR,LDC}{2}_{PRE,POST} fixing the encoding wherever is possible. - Move all instructions which use am2offset without a pattern to use addrmode2. - Add a new encoding bit to describe the index mode used and teach printAddrMode2Operand to check by the addressing mode which index mode to print. - Testcases llvm-svn: 128632
* lib/CodeGen/LiveIntervalAnalysis.cpp: [PR9590] Don't use ↵NAKAMURA Takumi2011-03-311-1/+3
| | | | | | | | | | std::pow(float,float) here. We don't expect the real "powf()" on some hosts (and powf() would be available on other hosts). For consistency, std::pow(double,double) may be called instead. Or, precision issue might attack us, to see unstable regalloc and stack coloring. llvm-svn: 128629
* InstCombine: Fix transform to use the swapped predicate.Benjamin Kramer2011-03-311-2/+2
| | | | | | Thanks Frits! llvm-svn: 128628
* InstCombine: fold fcmp (fneg x), (fneg y) -> fcmp x, yBenjamin Kramer2011-03-311-0/+5
| | | | llvm-svn: 128627
* InstCombine: fold fcmp pred (fneg x), C -> fcmp swap(pred) x, -CBenjamin Kramer2011-03-311-0/+8
| | | | llvm-svn: 128626
* InstCombine: Shrink "fcmp (fpext x), C" to "fcmp x, C" if C can be ↵Benjamin Kramer2011-03-311-0/+34
| | | | | | | | losslessly converted to the type of x. Fixes PR9592. llvm-svn: 128625
* InstCombine: fold fcmp (fpext x), (fpext y) -> fcmp x, y.Benjamin Kramer2011-03-311-0/+7
| | | | llvm-svn: 128624
* Pick a conservative register class when creating a small live range for remat.Jakob Stoklund Olesen2011-03-311-1/+1
| | | | | | | | | | | | The rematerialized instruction may require a more constrained register class than the register being spilled. In the test case, the spilled register has been inflated to the DPR register class, but we are rematerializing a load of the ssub_0 sub-register which only exists for DPR_VFP2 registers. The register class is reinflated after spilling, so the conservative choice is only temporary. llvm-svn: 128610
* Revert "- Implement asm parsing support for LDRT, LDRBT, STRT, STRBT and"Matt Beaumont-Gay2011-03-317-285/+66
| | | | | | This revision introduced a dependency cycle, as nlewycky mentioned by email. llvm-svn: 128597
* Somehow we managed to forget to encode the lane index for a large swathe of ↵Owen Anderson2011-03-302-21/+70
| | | | | | NEON instructions. With this fix, the entire test-suite passes with the Thumb integrated assembler. llvm-svn: 128587
* Don't try to create zero-sized stack objects.Evan Cheng2011-03-302-4/+6
| | | | llvm-svn: 128586
* - Implement asm parsing support for LDRT, LDRBT, STRT, STRBT andBruno Cardoso Lopes2011-03-307-66/+285
| | | | | | | | | | | | | | | {STR,LDC}{2}_PRE. - Fixed the encoding in some places. - Some of those instructions were using am2offset and now use addrmode2. Codegen isn't affected, instructions which use SelectAddrMode2Offset were not touched. - Teach printAddrMode2Operand to check by the addressing mode which index mode to print. - This is a work in progress, more work to come. The idea is to change places which use am2offset to use addrmode2 instead, as to unify assembly parser. - Add testcases for assembly parser llvm-svn: 128585
* Add a ARM-specific SD node for VBSL so that forms with a constant first operandCameron Zwarich2011-03-304-9/+82
| | | | | | can be recognized. This fixes <rdar://problem/9183078>. llvm-svn: 128584
* * The DSE code that tested for overlapping needed to take into account the factBill Wendling2011-03-301-1/+3
| | | | | | | | | | | | that one of the numbers is signed while the other is unsigned. This could lead to a wrong result when the signed was promoted to an unsigned int. * Add the data layout line to the testcase so that it will test the appropriate thing. Patch by David Terei! llvm-svn: 128577
* fixed typoAkira Hatanaka2011-03-301-2/+2
| | | | llvm-svn: 128574
* Reset StringMap's NumTombstones on clears and rehashes.Jakob Stoklund Olesen2011-03-301-0/+3
| | | | | | | | | | | | | StringMap was not properly updating NumTombstones after a clear or rehash. This was not fatal until now because the table was growing faster than NumTombstones could, but with the previous change of preventing infinite growth of the table the invariant (NumItems + NumTombstones <= NumBuckets) stopped being observed, causing infinite loops in certain situations. Patch by José Fonseca! llvm-svn: 128567
* Prevent infinite growth of SmallPtrSet instances.Jakob Stoklund Olesen2011-03-301-6/+9
| | | | | | | | Rehash but don't grow when full of tombstones. Patch by José Fonseca! llvm-svn: 128566
* Prevent infinite growth of SmallMap instances.Jakob Stoklund Olesen2011-03-301-1/+13
| | | | | | | | Rehash but don't grow when full of tombstones. Patch by José Fonseca! llvm-svn: 128565
* Fix evil VirtRegRewriter bug.Jakob Stoklund Olesen2011-03-301-0/+28
| | | | | | | | | | | | | | | The rewriter can keep track of multiple stack slots in the same register if they happen to have the same value. When an instruction modifies a stack slot by defining a register that is mapped to a stack slot, other stack slots in that register are no longer valid. This is a very rare problem, and I don't have a simple test case. I get the impression that VirtRegRewriter knows it is about to be deleted, inventing a last opaque problem. <rdar://problem/9204040> llvm-svn: 128562
* Teach VirtRegRewriter about the new virtual register numbers. No functional ↵Jakob Stoklund Olesen2011-03-301-10/+11
| | | | | | change. llvm-svn: 128561
* Avoid turning a floating point division with a constant power of two into a ↵Benjamin Kramer2011-03-301-0/+8
| | | | | | | | | denormal multiplication. Some platforms may treat denormals as zero, on other platforms multiplication with a subnormal is slower than dividing by a normal. llvm-svn: 128555
* InstCombine: If the divisor of an fdiv has an exact inverse, turn it into an ↵Benjamin Kramer2011-03-301-0/+12
| | | | | | | | fmul. Fixes PR9587. llvm-svn: 128546
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