aboutsummaryrefslogtreecommitdiffstats
path: root/lib/Target/X86
Commit message (Collapse)AuthorAgeFilesLines
* Target/X86/MC: Add an option for disabling arith relaxation, for my own testingDaniel Dunbar2011-04-281-0/+11
| | | | | | purposes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130438 91177308-0d34-0410-b5e6-96231b3b80d8
* fast-isel sret calls, try 2. We actually do need to do something on x86-32. ↵Eli Friedman2011-04-281-2/+4
| | | | | | rdar://problem/9303592 . git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130429 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r130348; causing buildbot issues on x86-32.Eli Friedman2011-04-281-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130412 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it whenRafael Espindola2011-04-283-2/+29
| | | | | | converting the symbol passed to .cfi_personality into bytes is the file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130400 91177308-0d34-0410-b5e6-96231b3b80d8
* move PR9803 to this readme.Chris Lattner2011-04-281-0/+28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130385 91177308-0d34-0410-b5e6-96231b3b80d8
* fast-isel sret. We actually don't need to do anything special on x86. :) ↵Eli Friedman2011-04-271-1/+0
| | | | | | rdar://problem/9303592 . git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130348 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unnecessary argument.Rafael Espindola2011-04-272-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130343 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename getPersonalityPICSymbol to getCFIPersonalitySymbol, document it, andRafael Espindola2011-04-272-0/+12
| | | | | | | | | | | | | | | | | | give it a bit more responsibility. Also implement it for MachO. If hacked to use cfi, 32 bit MachO will produce .cfi_personality 155, L___gxx_personality_v0$non_lazy_ptr and 64 bit will produce .cfi_presonality ___gxx_personality_v0 The general idea is that .cfi_personality gets passed the final symbol. It is up to codegen to produce it if using indirect representation (like 32 bit MachO), but it is up to MC to decide which relocations to create. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130341 91177308-0d34-0410-b5e6-96231b3b80d8
* Make the fast-isel code for literal 0.0 a bit shorter/faster, since 0.0 is ↵Eli Friedman2011-04-271-0/+41
| | | | | | common. rdar://problem/9303592 . git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130338 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor out code to fast-isel a memcpy operation with a small constantEli Friedman2011-04-271-32/+40
| | | | | | | | length. (I'm planning to use this to implement byval.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130274 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix an edge case involving branches in fast-isel on x86.Eli Friedman2011-04-271-2/+4
| | | | | | | | rdar://problem/9303306 . git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130272 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a TRI::getLargestLegalSuperClass hook to provide an upper limit on ↵Jakob Stoklund Olesen2011-04-262-0/+30
| | | | | | | | | | | | register class inflation. The hook will be used by the register allocator when recomputing register classes after removing constraints. Thumb1 code doesn't allow anything larger than tGPR, and x86 needs to ensure that the spill size doesn't change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130228 91177308-0d34-0410-b5e6-96231b3b80d8
* Print all the moves at a given label instead of just the first one.Rafael Espindola2011-04-261-9/+0
| | | | | | Remove previous DwarfCFI hack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130187 91177308-0d34-0410-b5e6-96231b3b80d8
* Silence an overzealous uninitialized variable warning from GCC.Benjamin Kramer2011-04-231-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130053 91177308-0d34-0410-b5e6-96231b3b80d8
* X86: Try to use a smaller encoding by transforming (X << C1) & C2 into (X & ↵Benjamin Kramer2011-04-221-0/+75
| | | | | | | | | | | | | | | | | | | | | | | (C2 >> C1)) & C1. (Part of PR5039) This tends to happen a lot with bitfield code generated by clang. A simple example for x86_64 is uint64_t foo(uint64_t x) { return (x&1) << 42; } which used to compile into bloated code: shlq $42, %rdi ## encoding: [0x48,0xc1,0xe7,0x2a] movabsq $4398046511104, %rax ## encoding: [0x48,0xb8,0x00,0x00,0x00,0x00,0x00,0x04,0x00,0x00] andq %rdi, %rax ## encoding: [0x48,0x21,0xf8] ret ## encoding: [0xc3] with this patch we can fold the immediate into the and: andq $1, %rdi ## encoding: [0x48,0x83,0xe7,0x01] movq %rdi, %rax ## encoding: [0x48,0x89,0xf8] shlq $42, %rax ## encoding: [0x48,0xc1,0xe0,0x2a] ret ## encoding: [0xc3] It's possible to save another byte by using 'andl' instead of 'andq' but I currently see no way of doing that without making this code even more complicated. See the TODOs in the code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129990 91177308-0d34-0410-b5e6-96231b3b80d8
* Compute the size of the FDE encoding instead of hard coding it. UpdateRafael Espindola2011-04-221-10/+1
| | | | | | X8664_ELFTargetObjectFile::getFDEEncoding to match reality. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129959 91177308-0d34-0410-b5e6-96231b3b80d8
* Prefer cheap registers for busy live ranges.Jakob Stoklund Olesen2011-04-201-7/+13
| | | | | | | | | | | | | | On the x86-64 and thumb2 targets, some registers are more expensive to encode than others in the same register class. Add a CostPerUse field to the TableGen register description, and make it available from TRI->getCostPerUse. This represents the cost of a REX prefix or a 32-bit instruction encoding required by choosing a high register. Teach the greedy register allocator to prefer cheap registers for busy live ranges (as indicated by spill weight). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129864 91177308-0d34-0410-b5e6-96231b3b80d8
* This should always be signed chars, so use int8_t. This fixes a miscompile whenNick Lewycky2011-04-201-3/+3
| | | | | | | | | llvm is built with unsigned chars where an immediate such as 0xff would be zero extended to 64-bits, turning "cmp $0xff,%eax" into "cmp $0xffffffffffffffff,%eax". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129845 91177308-0d34-0410-b5e6-96231b3b80d8
* ADT/Triple: Renambe isOSX... methods to isMacOSX for consistency with the OSDaniel Dunbar2011-04-203-7/+8
| | | | | | triple component. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129838 91177308-0d34-0410-b5e6-96231b3b80d8
* ADT/Triple: Move a variety of clients to using isOSDarwin() and isOSWindows()Daniel Dunbar2011-04-193-51/+37
| | | | | | predicates. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129816 91177308-0d34-0410-b5e6-96231b3b80d8
* Target/X86: Eliminate uses of getDarwinVers().Daniel Dunbar2011-04-194-11/+7
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129813 91177308-0d34-0410-b5e6-96231b3b80d8
* Target/X86: Add getTargetTriple() accessor.Daniel Dunbar2011-04-191-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129812 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for FastISel'ing varargs calls.Eli Friedman2011-04-191-4/+21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129765 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement support for x86 fastisel of small fixed-sized memcpys, which are ↵Chris Lattner2011-04-191-5/+50
| | | | | | | | | | generated en-mass for C++ PODs. On my c++ test file, this cuts the fast isel rejects by 10x and shrinks the generated .s file by 5% git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129755 91177308-0d34-0410-b5e6-96231b3b80d8
* tidy upChris Lattner2011-04-191-3/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129753 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement support for fast isel of calls of i1 arguments, even though they ↵Chris Lattner2011-04-191-10/+23
| | | | | | | | | | | | | are illegal, when they are a truncate from something else. This eliminates fully half of all the fastisel rejections on a test c++ file I'm working with, which should make a substantial improvement for -O0 compile of c++ code. This fixed rdar://9297003 - fast isel bails out on all functions taking bools git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129752 91177308-0d34-0410-b5e6-96231b3b80d8
* Handle i1/i8/i16 constant integer arguments to calls by prepromoting them.Chris Lattner2011-04-191-9/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | Before we would bail out on i1 arguments all together, now we just bail on non-constant ones. Also, we used to emit extraneous code. e.g. test12 was: movb $0, %al movzbl %al, %edi callq _test12 and test13 was: movb $0, %al xorl %edi, %edi movb %al, 7(%rsp) callq _test13f Now we get: movl $0, %edi callq _test12 and: movl $0, %edi callq _test13f git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129751 91177308-0d34-0410-b5e6-96231b3b80d8
* be layout aware, to produce:Chris Lattner2011-04-191-1/+8
| | | | | | | | | | | | | | | | | | | | testb $1, %al je LBB0_2 ## BB#1: ## %if.then movb $0, %al instead of: testb $1, %al jne LBB0_1 jmp LBB0_2 LBB0_1: ## %if.then movb $0, %al how 'bout that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129749 91177308-0d34-0410-b5e6-96231b3b80d8
* fix rdar://9297006 - fast isel bails out on trunc to i1 -> bools cry,Chris Lattner2011-04-191-6/+29
| | | | | | | a common cause of fast isel rejects on c++ code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129748 91177308-0d34-0410-b5e6-96231b3b80d8
* Invert the meaning of printAliasInstr's return value. It now returnsEric Christopher2011-04-182-1/+4
| | | | | | | true on success and false on failure. Update callers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129722 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new bit that ImmLeaf's can opt into, which allows them to duck out ofChris Lattner2011-04-181-3/+6
| | | | | | | | | the generated FastISel. X86 doesn't need to generate code to match ADD16ri8 since ADD16ri will do just fine. This is a small codesize win in the generated instruction selector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129692 91177308-0d34-0410-b5e6-96231b3b80d8
* switch the rest of the x86 immediate patterns over to ImmLeaf, Chris Lattner2011-04-171-17/+9
| | | | | | | | simplifying them and exposing more information to tblgen. It would be nice if other target authors adopted this as well, particularly arm since it has fastisel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129676 91177308-0d34-0410-b5e6-96231b3b80d8
* now that predicates have a decent abstraction layer on them, introduce a new Chris Lattner2011-04-171-1/+6
| | | | | | | | | | kind of predicate: one that is specific to imm nodes. The predicate function specified here just checks an int64_t directly instead of messing around with SDNode's. The virtue of this is that it means that fastisel and other things can reason about these predicates. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129675 91177308-0d34-0410-b5e6-96231b3b80d8
* Rework our internal representation of node predicates to expose moreChris Lattner2011-04-171-1/+1
| | | | | | | | | structure and fix some fixmes. We now have a TreePredicateFn class that handles all of the decoding of these things. This is an internal cleanup that has no impact on the code generated by tblgen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129670 91177308-0d34-0410-b5e6-96231b3b80d8
* 1. merge fast-isel-shift-imm.ll into fast-isel-x86-64.llChris Lattner2011-04-171-22/+13
| | | | | | | | | | | | 2. implement rdar://9289501 - fast isel should fold trivial multiplies to shifts 3. teach tblgen to handle shift immediates that are different sizes than the shifted operands, eliminating some code from the X86 fast isel backend. 4. Have FastISel::SelectBinaryOp use (the poorly named) FastEmit_ri_ function instead of FastEmit_ri to simplify code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129666 91177308-0d34-0410-b5e6-96231b3b80d8
* fix an x86 fast isel issue where we'd completely give up on folding an addressChris Lattner2011-04-171-71/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | when we have a global variable base an an index. Instead, just give up on folding the global variable. Before we'd geenrate: _test: ## @test ## BB#0: movq _rtx_length@GOTPCREL(%rip), %rax leaq (%rax), %rax addq %rdi, %rax movzbl (%rax), %eax ret now we generate: _test: ## @test ## BB#0: movq _rtx_length@GOTPCREL(%rip), %rax movzbl (%rax,%rdi), %eax ret The difference is even more significant when there is a scale involved. This fixes rdar://9289558 - total fail with addr mode formation at -O0/x86-64 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129664 91177308-0d34-0410-b5e6-96231b3b80d8
* fix an oversight which caused us to compile the testcase (and otherChris Lattner2011-04-171-4/+7
| | | | | | | | | | | | | | | | | | | | | less trivial things) into a dummy lea. Before we generated: _test: ## @test movq _G@GOTPCREL(%rip), %rax leaq (%rax), %rax ret now we produce: _test: ## @test movq _G@GOTPCREL(%rip), %rax ret This is part of rdar://9289558 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129662 91177308-0d34-0410-b5e6-96231b3b80d8
* tidy up and reduce indentation.Chris Lattner2011-04-171-37/+39
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129661 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove working entry from README.Eli Friedman2011-04-171-8/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129654 91177308-0d34-0410-b5e6-96231b3b80d8
* Add 129518 back with a fix for when we are producing eh just because of ↵Rafael Espindola2011-04-152-2/+14
| | | | | | | | | debug info. Change ELF systems to use CFI for producing the EH tables. This reduces the size of the clang binary in Debug builds from 690MB to 679MB. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129571 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a ton of comment typos found by codespell. Patch byChris Lattner2011-04-1513-22/+22
| | | | | | | | Luis Felipe Strano Moraes! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r129518, "Change ELF systems to use CFI for producing the EH tables. ↵NAKAMURA Takumi2011-04-152-14/+2
| | | | | | | | This reduces the" It broke several builds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129557 91177308-0d34-0410-b5e6-96231b3b80d8
* Add 3DNow! intrinsics.Michael J. Spencer2011-04-152-49/+75
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129551 91177308-0d34-0410-b5e6-96231b3b80d8
* move PR9661 out to here.Chris Lattner2011-04-141-0/+24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129527 91177308-0d34-0410-b5e6-96231b3b80d8
* Change ELF systems to use CFI for producing the EH tables. This reduces theRafael Espindola2011-04-142-2/+14
| | | | | | size of the clang binary in Debug builds from 690MB to 679MB. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129518 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix whitespace and tabs.Michael J. Spencer2011-04-141-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129517 91177308-0d34-0410-b5e6-96231b3b80d8
* As Dan pointed out, movzbl, movsbl, and friends are nicer than their aliasBill Wendling2011-04-141-13/+13
| | | | | | | (movzx/movsx) because they give more information. Revert that part of the patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129498 91177308-0d34-0410-b5e6-96231b3b80d8
* Have the X86 back-end emit the alias instead of what's being aliased. In mostBill Wendling2011-04-142-11/+14
| | | | | | | cases, it's much nicer and more informative reading the alias. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129497 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an option to not print the alias of an instruction. It defaults to "printBill Wendling2011-04-131-2/+4
| | | | | | | the alias". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129485 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r129401 with patch for clang.Bill Wendling2011-04-132-31/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129419 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.1 at 2025-01-27 11:47:05 +0000