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11866 Commits

Author SHA1 Message Date
Duncan Sands
7cf85e74e3 Fix a README item by having InstructionSimplify do a mild form of value 
numbering, in which it considers (for example) "%a = add i32 %x, %y" and
"%b = add i32 %x, %y" to be equal because the operands are equal and the
result of the instructions only depends on the values of the operands.
This has almost no effect (it removes 4 instructions from gcc-as-one-file),
and perhaps slows down compilation: I measured a 0.4% slowdown on the large
gcc-as-one-file testcase, but it wasn't statistically significant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122654 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-01 16:12:09 +00:00
Che-Liang Chiou
c88e91b875 ptx: remove reg-reg addressing mode and st.const 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122653 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-01 11:58:58 +00:00
Che-Liang Chiou
ad83c1d383 ptx: add store instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122652 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-01 10:50:37 +00:00
Nick Lewycky
c00210cef2 Add another non-commutable instruction that gas accepts commuted forms for. 
Fixes PR8861.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122641 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-30 22:10:49 +00:00
Che-Liang Chiou
d34f19f7ba ptx: add state spaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122638 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-30 10:41:27 +00:00
Daniel Dunbar
b2624eda5a MC/Mach-O/Thumb: Set the thumb bit in the symbol table. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122630 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 14:14:06 +00:00
Rafael Espindola
caf1158b0f Correctly encode pcrel|indirect. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122624 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 04:31:26 +00:00
NAKAMURA Takumi
5c083b174e test/Transforms/ConstProp/logicaltest.ll: FileCheck-ize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122620 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 03:58:56 +00:00
NAKAMURA Takumi
e5eff5f6a2 test/CodeGen/X86/negative-sin.ll: FileCheck-ize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122619 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 03:58:47 +00:00
NAKAMURA Takumi
a9eb163261 test/CodeGen/X86/fp-in-intregs.ll: FileCheck-ize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122618 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 03:58:36 +00:00
Rafael Espindola
a7e450574c Fix bug when trying to output uint16_t or uint32_t. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122615 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 02:30:49 +00:00
Rafael Espindola
b40a71fda1 Implement cfi_def_cfa. Also don't convert to dwarf reg numbers twice. Looks 
like 6 is a fixed point of that and so the previous tests were OK :-)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122614 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 01:42:56 +00:00
Rafael Espindola
b4601bd2ff Implement cfi_def_cfa_register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122612 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 00:26:06 +00:00
Rafael Espindola
b790a17efb Initial .cfi_offset implementation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122611 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 00:09:59 +00:00
Rafael Espindola
3b78cdc57a Don't produce a "DW_CFA_advance_loc 0". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122609 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-28 23:38:03 +00:00
Rafael Espindola
fe024d0a62 Implement .cfi_remember_state and .cfi_restore_state. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122602 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-28 18:36:23 +00:00
Rafael Espindola
245a1e2041 Relax address updates in the eh_frame section. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122591 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-28 05:39:27 +00:00
Rafael Espindola
5bba084253 Start adding basic support for emitting the call frame instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122590 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-28 04:15:37 +00:00
Rafael Espindola
bdc3167c08 Add support for .cfi_lsda. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122584 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-27 15:56:22 +00:00
Daniel Dunbar
e862453806 MC/Mach-O/Thumb: Select appropriate relocation types for Thumb. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122583 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-27 14:49:49 +00:00
Rafael Espindola
c3a561cb8e Handle reloc_riprel_4byte_movq_load. Should make the bots happy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122579 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-27 02:03:24 +00:00
Rafael Espindola
3a83c40ab6 Add support for the same encodings of the personality function that gnu as 
supports.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122577 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-27 00:36:05 +00:00
Chris Lattner
a92ff91a96 implement enough of the memset inference algorithm to recognize and insert 
memsets.  This is still missing one important validity check, but this is enough
to compile stuff like this:

void test0(std::vector<char> &X) {
  for (std::vector<char>::iterator I = X.begin(), E = X.end(); I != E; ++I)
    *I = 0;
}

void test1(std::vector<int> &X) {
  for (long i = 0, e = X.size(); i != e; ++i)
    X[i] = 0x01010101;
}

With:
 $ clang t.cpp -S -o - -O2 -emit-llvm | opt -loop-idiom | opt -O3 | llc 

to:

__Z5test0RSt6vectorIcSaIcEE:            ## @_Z5test0RSt6vectorIcSaIcEE
## BB#0:                                ## %entry
	subq	$8, %rsp
	movq	(%rdi), %rax
	movq	8(%rdi), %rsi
	cmpq	%rsi, %rax
	je	LBB0_2
## BB#1:                                ## %bb.nph
	subq	%rax, %rsi
	movq	%rax, %rdi
	callq	___bzero
LBB0_2:                                 ## %for.end
	addq	$8, %rsp
	ret
...
__Z5test1RSt6vectorIiSaIiEE:            ## @_Z5test1RSt6vectorIiSaIiEE
## BB#0:                                ## %entry
	subq	$8, %rsp
	movq	(%rdi), %rax
	movq	8(%rdi), %rdx
	subq	%rax, %rdx
	cmpq	$4, %rdx
	jb	LBB1_2
## BB#1:                                ## %for.body.preheader
	andq	$-4, %rdx
	movl	$1, %esi
	movq	%rax, %rdi
	callq	_memset
LBB1_2:                                 ## %for.end
	addq	$8, %rsp
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122573 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 23:42:51 +00:00
Chris Lattner
61db1f56d0 start using irbuilder to make mem intrinsics in a few passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122572 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 22:57:41 +00:00
Rafael Espindola
98976610d2 Add support for @note. Patch by Jörg Sonnenberger. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122568 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 21:30:59 +00:00
Rafael Espindola
d7c8ccae8e Add basic support for .cfi_personality. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122566 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 20:20:31 +00:00
Chris Lattner
7ab3cc32d6 Generalize a previous change, fixing PR8855 - an valid large immediate 
rejected by the mc assembler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122557 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-25 21:36:35 +00:00
Benjamin Kramer
a112087e42 MemCpyOpt: Turn memcpys from a constant into a memset if possible. 
This allows us to compile "int cst[] = {-1, -1, -1};" into
  movl  $-1, 16(%rsp)
  movq  $-1, 8(%rsp)
instead of
  movl  _cst+8(%rip), %eax
  movl  %eax, 16(%rsp)
  movq  _cst(%rip), %rax
  movq  %rax, 8(%rsp)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122548 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 21:17:12 +00:00
Daniel Dunbar
4010dd72b8 MC/Mach-O/ARM: Start handling some Thumb branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122547 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 16:41:46 +00:00
Kevin Enderby
d82ed5b734 In llvm-mc parse a Hash token as a full line comment. Allows handling of 
preprocessed .s files and matches darwin gas.  rdar://8798690
Also fix a comment on the next line of AsmParser.cpp after this new code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122531 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-24 00:12:02 +00:00
Owen Anderson
ec3953ff95 When determining if we can fold (x >> C1) << C2, the bits that we need to verify are zero 
are not the low bits of x, but the bits that WILL be the low bits after the operation completes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122529 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 23:56:24 +00:00
Bob Wilson
3c904694fc Radar 8803471: Fix expansion of ARM BCCi64 pseudo instructions. 
If the basic block containing the BCCi64 (or BCCZi64) instruction ends with
an unconditional branch, that branch needs to be deleted before appending
the expansion of the BCCi64 to the end of the block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122521 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 22:45:49 +00:00
Torok Edwin
78982611d8 XFAIL vg_leak the new test as the rest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122517 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 21:22:09 +00:00
Torok Edwin
a156efdf71 Fix OCaml bindings crash, PR8847. 
See http://caml.inria.fr/mantis/view.php?id=4166
If we call only external functions from a module, then its 'let _' bindings
don't get executed, which means that the exceptions don't get registered for use
in the C code.
This in turn causes llvm_raise to call raise_with_arg() with a NULL pointer and
cause a segmentation fault.

The workaround is to declare all 'external' functions as 'val' in these .mli
files.

Also added a separate testcase (the testcase must call only external functions
for the bug to occur).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122497 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 15:49:26 +00:00
Andrew Trick
1b1658741a Fixes PR8823: add-with-overflow-128.ll 
In the bottom-up selection DAG scheduling, handle two-address
instructions that read/write unspillable registers. Treat
the entire chain of two-address nodes as a single live range.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122472 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 03:15:51 +00:00
Benjamin Kramer
f50125ecaa DAGCombine add (sext i1), X into sub X, (zext i1) if sext from i1 is illegal. The latter usually compiles into smaller code. 
example code:
unsigned foo(unsigned x, unsigned y) {
  if (x != 0) y--;
  return y;
}

before:
  _foo:                           ## @foo
    cmpl  $1, 4(%esp)             ## encoding: [0x83,0x7c,0x24,0x04,0x01]
    sbbl  %eax, %eax              ## encoding: [0x19,0xc0]
    notl  %eax                    ## encoding: [0xf7,0xd0]
    addl  8(%esp), %eax           ## encoding: [0x03,0x44,0x24,0x08]
    ret                           ## encoding: [0xc3]

after:
  _foo:                           ## @foo
    cmpl  $1, 4(%esp)             ## encoding: [0x83,0x7c,0x24,0x04,0x01]
    movl  8(%esp), %eax           ## encoding: [0x8b,0x44,0x24,0x08]
    adcl  $-1, %eax               ## encoding: [0x83,0xd0,0xff]
    ret                           ## encoding: [0xc3]



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122455 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 23:17:45 +00:00
Benjamin Kramer
4ac19470dc InstCombine: creating selects from -1 and 0 is fine, they combine into a sext from i1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122453 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 23:12:15 +00:00
Benjamin Kramer
e915ff30cd X86: Lower a select directly to a setcc_carry if possible. 
int test(unsigned long a, unsigned long b) { return -(a < b); }
compiles to
  _test:                              ## @test
    cmpq  %rsi, %rdi                  ## encoding: [0x48,0x39,0xf7]
    sbbl  %eax, %eax                  ## encoding: [0x19,0xc0]
    ret                               ## encoding: [0xc3]
instead of
  _test:                              ## @test
    xorl  %ecx, %ecx                  ## encoding: [0x31,0xc9]
    cmpq  %rsi, %rdi                  ## encoding: [0x48,0x39,0xf7]
    movl  $-1, %eax                   ## encoding: [0xb8,0xff,0xff,0xff,0xff]
    cmovael %ecx, %eax                ## encoding: [0x0f,0x43,0xc1]
    ret                               ## encoding: [0xc3]


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122451 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 23:09:28 +00:00
Daniel Dunbar
72123334ad MC/Mach-O/ARM: Don't try to use scattered relocs for BR24 fixups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122441 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 21:26:43 +00:00
Rafael Espindola
ecbbf40d5c Add reduced test from 8845. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122438 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 21:15:13 +00:00
Duncan Sands
1cd05bb605 When determining whether the new instruction was already present in 
the original instruction, half the cases were missed (making it not
wrong but suboptimal).  Also correct a typo (A <-> B) in the second
chunk. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 17:15:25 +00:00
Duncan Sands
b3898af89f Make this test not depend on how the variable is named. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122413 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 17:08:04 +00:00
Daniel Dunbar
df561e0234 MC/Mach-O/ARM: We always use the SECTDIFF reloc type on ARM, which is 
esp. important given that the LOCAL_SECTDIFF enumeration got redefined.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122412 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 16:52:19 +00:00
Daniel Dunbar
294e67861c MC/Mach-O/ARM: Add enough relocation logic to get BR24 relocations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122407 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 16:19:24 +00:00
Rafael Espindola
f01212489b Simplify the handling of .size expressions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122404 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 16:03:00 +00:00
Duncan Sands
37bf92b523 Add a generic expansion transform: A op (B op' C) -> (A op B) op' (A op C) 
if both A op B and A op C simplify.  This fires fairly often but doesn't
make that much difference.  On gcc-as-one-file it removes two "and"s and
turns one branch into a select.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122399 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 13:36:08 +00:00
Che-Liang Chiou
fc7072c3c4 ptx: add ld instruction and test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122398 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 10:38:51 +00:00
Chris Lattner
cbf68dfbc0 Fix a bug in ReduceLoadWidth that wasn't handling extending 
loads properly.  We miscompiled the testcase into:

_test:                                  ## @test
	movl	$128, (%rdi)
	movzbl	1(%rdi), %eax
	ret

Now we get a proper:

_test:                                  ## @test
	movl	$128, (%rdi)
	movsbl	(%rdi), %eax
	movzbl	%ah, %eax
	ret

This fixes PR8757.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122392 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-22 08:02:57 +00:00
Owen Anderson
f056838956 Give GVN back the ability to perform simple conditional propagation on conditional branch values. 
I still think that LVI should be handling this, but that capability is some ways off in the future,
and this matters for some significant benchmarks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-21 23:54:34 +00:00
Dale Johannesen
c72b18cdc8 Reapply 122353-122355 with fixes. 122354 was wrong; 
the shift type was needed one place, the shift count
type another.  The transform in 123555 had the same
problem.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122366 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-21 21:55:50 +00:00