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6875 Commits

Author SHA1 Message Date
Douglas Gregor
e735882224 Add a missing <cctype> include, from Joerg Sonnenberger! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123670 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-17 19:17:01 +00:00
Chris Lattner
dec28ceb02 fix PR8514, a bug where the "heroic" transformation of shift/and 
into and/shift would cause nodes to move around and a dangling pointer
to happen.  The code tried to avoid this with a HandleSDNode, but 
got the details wrong.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123578 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 08:48:11 +00:00
Chris Lattner
9cd3da47f9 fix PR8981, a crash trying to form a conditional inc with a floating point compare. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123560 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 02:56:53 +00:00
Chris Lattner
b99fdee325 reapply my fix for PR8961 with a tweak to properly handle 
multi-instruction sequences like calls.  Many thanks to Jakob for
finding a testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123559 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-16 02:27:38 +00:00
Ted Kremenek
d7f696edec 'HiReg' is written but never read. Nuke its 
declaration and its assignments.

Found by clang static analyzer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123486 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 22:34:13 +00:00
Anton Korobeynikov
3965b5e974 Add a possibility to switch between CFI directives- and table-based frame description emission. Currently all the backends use table-based stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123476 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 21:58:08 +00:00
Anton Korobeynikov
e749911372 Cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123475 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 21:57:58 +00:00
Chris Lattner
d357e88740 revert my fastisel patch again which apparently still gives the 
llvm-gcc-i386-linux-selfhost buildbot heartburn...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123431 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 06:14:33 +00:00
Chris Lattner
9e27cc8049 reapply r123414 now that the botz are calmed down and the fix is already in. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123427 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 04:24:28 +00:00
Chris Lattner
a899d1c264 r123414 broke llvm-gcc bootstrap apparently, revert 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123422 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 02:07:32 +00:00
Chris Lattner
d754041493 fix PR8961 - a fast isel miscompilation where we'd insert a new instruction 
after sext's generated for addressing that got folded.  Previously we compiled
test5 into:

_test5:                                 ## @test5
## BB#0:
        movq    -8(%rsp), %rax          ## 8-byte Reload
        movq    (%rdi,%rax), %rdi
        addq    %rdx, %rdi
        movslq  %esi, %rax
        movq    %rax, -8(%rsp)          ## 8-byte Spill
        movq    %rdi, %rax
        ret

which is insane and wrong.  Now we produce:

_test5:                                 ## @test5
## BB#0:
	movslq	%esi, %rax
	movq	(%rdi,%rax), %rax
	addq	%rdx, %rax
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123414 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-14 00:01:01 +00:00
Jakob Stoklund Olesen
f7ca976e74 Fix a few more places that should use MBB::getLastNonDebugInstr(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123408 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 22:47:43 +00:00
Jakob Stoklund Olesen
4f28c1c714 Teach frame lowering to ignore debug values after the terminators. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123399 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 21:28:52 +00:00
Eric Christopher
04f5079ca1 Experiment with changing the default 32-bit linux stack alignment to 
16 bytes for PR8969. Update all testcases accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123367 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-13 06:47:10 +00:00
Chris Lattner
3a5004dc3e Fix PR8946, a missing reg/reg form of movdqu. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123242 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 17:04:55 +00:00
Anton Korobeynikov
7af6fad0a7 Update CMake stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123171 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-10 12:39:23 +00:00
Anton Korobeynikov
16c29b5f28 Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123170 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-10 12:39:04 +00:00
Jakob Stoklund Olesen
c9df025e33 Simplify a bunch of isVirtualRegister() and isPhysicalRegister() logic. 
These functions not longer assert when passed 0, but simply return false instead.

No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123155 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-10 02:58:51 +00:00
Jakob Stoklund Olesen
b258135301 Fix the last virtual register enumerations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123102 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-08 23:11:11 +00:00
Evan Cheng
55d4200336 Recognize inline asm 'rev /bin/bash, ' as a bswap intrinsic call. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123048 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-08 01:24:27 +00:00
Evan Cheng
c36b7069b4 Do not model all INLINEASM instructions as having unmodelled side effects. 
Instead encode llvm IR level property "HasSideEffects" in an operand (shared
with IsAlignStack). Added MachineInstrs::hasUnmodeledSideEffects() to check
the operand when the instruction is an INLINEASM.

This allows memory instructions to be moved around INLINEASM instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123044 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-07 23:50:32 +00:00
Evan Cheng
a5e1362f96 Revert r122955. It seems using movups to lower memcpy can cause massive regression (even on Nehalem) in edge cases. I also didn't see any real performance benefit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123015 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-07 19:35:30 +00:00
Rafael Espindola
2f867a63da Correctly disassemble truncated asm. 
Patch by Richard Simth.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122962 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-06 16:48:42 +00:00
Benjamin Kramer
5191e7cc26 Remove dead code and silence warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122957 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-06 13:01:02 +00:00
Evan Cheng
461f1fc359 Use movups to lower memcpy and memset even if it's not fast (like corei7). 
The theory is it's still faster than a pair of movq / a quad of movl. This
will probably hurt older chips like P4 but should run faster on current
and future Intel processors. rdar://8817010


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122955 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-06 07:58:36 +00:00
Evan Cheng
0521928ae7 Re-implement r122936 with proper target hooks. Now getMaxStoresPerMemcpy 
etc. takes an option OptSize. If OptSize is true, it would return
the inline limit for functions with attribute OptSize.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122952 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-06 06:52:41 +00:00
Bill Wendling
a99ec28134 PR8919 - LLVM incorrectly generates "_alloca" as the stack probing call. That 
works only on MinGW32. On 64-bit, the function to call is "__chkstk".
Patch by KS Sreeram!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122934 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-06 00:50:34 +00:00
Bill Wendling
78d15761e4 PR8918 - When used with MinGW64, LLVM generates a "calll __main" at the 
beginning of the "main" function. The assembler complains about the invalid
suffix for the 'call' instruction. The right instruction is "callq __main".
Patch by KS Sreeram!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122933 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-06 00:47:10 +00:00
Chris Lattner
c010e61ae1 fix PR8900, a shuffle miscompilation. Patch by Nadav Rotem! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122921 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 22:28:46 +00:00
Chris Lattner
c46ec649b1 silence more self assignment warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122920 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-05 22:26:52 +00:00
Jakob Stoklund Olesen
631ee4b89f Use the EdgeBundles analysis in X86FloatingPoint instead of recomputing CFG 
bundles in the pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122833 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 21:10:11 +00:00
Jakob Stoklund Olesen
8dd070edc2 Turn the EdgeBundles class into a stand-alone machine CFG analysis pass. 
The analysis will be needed by both the greedy register allocator and the
X86FloatingPoint pass. It only needs to be computed once when the CFG doesn't
change.

This pass is very fast, usually showing up as 0.0% wall time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122832 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 21:10:05 +00:00
Dale Johannesen
1e08cd1eae Eliminate a warning compiling with llvm-gcc. (IMO the 
warning is overzealous but gcc is what it is.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122829 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-04 19:31:24 +00:00
Evan Cheng
7158e08b8e Use pushq / popq instead of subq $8, %rsp / addq $8, %rsp to adjust stack in 
prologue and epilogue if the adjustment is 8. Similarly, use pushl / popl if
the adjustment is 4 in 32-bit mode.

In the epilogue, takes care to pop to a caller-saved register that's not live
at the exit (either return or tailcall instruction).
rdar://8771137


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122783 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-03 22:53:22 +00:00
Benjamin Kramer
80220369b0 Try to reuse the value when lowering memset. 
This allows us to compile:
  void test(char *s, int a) {
    __builtin_memset(s, a, 15);
  }
into 1 mul + 3 stores instead of 3 muls + 3 stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122710 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-02 19:57:05 +00:00
Oscar Fuentes
3458534f11 A workaround for a bug in cmake 2.8.3 diagnosed on PR 8885. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122706 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-02 19:32:31 +00:00
Chris Lattner
527b47d189 update a bunch of entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122700 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-02 18:31:38 +00:00
Rafael Espindola
03277e7fb4 Add support for the 'H' modifier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122667 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-01 20:58:46 +00:00
Oscar Fuentes
ba6f918a6d Add to the list of cmake files the object file, not the asm file. This 
is necessary for executing the custom command that runs the
assember. Fixes PR8877.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122649 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-31 20:15:37 +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
NAKAMURA Takumi
7d63a2c2e8 CMake: Add disabling optimization on MSVC8 and MSVC10 as workaround for some files in Target/ARM and Target/X86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122623 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-29 03:59:27 +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
6dbb5dc5eb fix some sort of weird pasto 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122560 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 12:05:11 +00:00
Chris Lattner
8a4893e013 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122559 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-26 03:53:31 +00:00
Evan Cheng
e4a2dd2f1a Code clean up. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122528 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 23:54:17 +00:00
Chris Lattner
036609bd7d Flag -> Glue, the ongoing saga 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122513 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 18:28:41 +00:00
Benjamin Kramer
3e4106105b Remove some obsolete README items, add a new one off the top of my head. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122495 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-23 15:07:02 +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
Benjamin Kramer
7d6fe13efc Add some x86 specific dagcombines for conditional increments. 
(add Y, (sete  X, 0)) -> cmp X, 1; adc  0, Y
(add Y, (setne X, 0)) -> cmp X, 1; sbb -1, Y
(sub (sete  X, 0), Y) -> cmp X, 1; sbb  0, Y
(sub (setne X, 0), Y) -> cmp X, 1; adc -1, Y

for
  unsigned foo(unsigned a, unsigned b) {
    if (a == 0) b++;
    return b;
  }
we now get:
  foo:
    cmpl  $1, %edi
    movl  %esi, %eax
    adcl  $0, %eax
    ret
instead of:
  foo:
    testl %edi, %edi
    sete  %al
    movzbl  %al, %eax
    addl  %esi, %eax
    ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122364 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-21 21:41:44 +00:00
Chris Lattner
f1b4eafbfe rename MVT::Flag to MVT::Glue. "Flag" is a terrible name for 
something that just glues two nodes together, even if it is
sometimes used for flags.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122310 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-21 02:38:05 +00:00