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Author SHA1 Message Date
Stuart Hastings
84be958ed8 Omit unnecessary stack copy when x87 input is a load. 
rdar://problem/6373334


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132458 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-02 15:57:11 +00:00
Stuart Hastings
ac92565384 Tweak testcase for ARM bot. rdar://problem/5993888 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132454 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-02 05:05:39 +00:00
Devang Patel
c432907eca Do not drop constant values when a variable's content is described using .debug_loc entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132427 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-01 22:03:25 +00:00
Stuart Hastings
ec880283b3 Recommit 132404 with fixes. rdar://problem/5993888 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132424 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-01 21:33:14 +00:00
Stuart Hastings
4abc5fea9c Revert 132404 to appease a buildbot. rdar://problem/5993888 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132419 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-01 19:52:20 +00:00
Stuart Hastings
0f971b1fdb Cleanup test case. rdar://problem/5660695 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132408 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-01 18:23:14 +00:00
Stuart Hastings
10ff0bbdfb Add support for x86 CMPEQSS and friends. These instructions do a 
floating-point comparison, generate a mask of 0s or 1s, and generally
DTRT with NaNs.  Only profitable when the user wants a materialized 0
or 1 at runtime.  rdar://problem/5993888


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132404 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-01 17:17:45 +00:00
Stuart Hastings
d7de954644 A forthcoming SSE patch will break this test; since the test is also 
valid for x87, re-target to x87.  rdar://problem/5993888


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132401 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-01 16:13:09 +00:00
Stuart Hastings
b909d35de4 Test case for 132396. rdar://problem/5660695 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132399 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-01 15:50:29 +00:00
Rafael Espindola
6e032942cf Use the dwarf->llvm mapping to print register names in the cfi 
directives.

Fixes PR9826.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132317 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-30 20:20:15 +00:00
Eli Friedman
94657b6f8a Force a triple to make this test pass on Darwin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132228 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-27 23:12:48 +00:00
Cameron Zwarich
f5e771db37 Add a GR32_NOREX_NOSP register class and fix a bug where getMatchingSuperRegClass() 
was saying that the matching superregister class of GR32_NOREX in GR64_NOREX_NOSP
is GR64_NOREX, which drops the NOSP constraint. This fixes PR10032.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132225 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-27 22:26:04 +00:00
Rafael Espindola
5b23b7fe31 Make size computation less brittle. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132222 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-27 22:05:41 +00:00
Jakob Stoklund Olesen
6205769741 Delete a test that is no longer relevant. 
According to PR2536, the old spiller had trouble with the IMPLICIT_DEF in this
code:

  %reg1028<def> = MOV16rm %reg0, 1, %reg0, <ga:g_5>, Mem:LD(2,2) [g_5 + 0]
  %reg1039<def> = IMPLICIT_DEF
  %reg1038<def> = INSERT_SUBREG %reg1039, %reg1028, 2
  %reg1025<def> = AND32ri %reg1038, 65534, %%EFLAGS<imp-def>

However, today we emit a zero-extending load instead:

  %vreg10<def> = MOVZX32rm16 %noreg, 1, %noreg, <ga:@g_5>, %noreg; %mem:LD2[@g_5] GR32:%vreg10
  %vreg0<def> = AND32ri %vreg10, 65534, %%EFLAGS<imp-def,dead>; %GR32:%vreg0,%vreg10

This makes the test pointless since it no longer creates the spiller hazard.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132210 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-27 20:02:42 +00:00
Devang Patel
b58128e2b2 Select DW_AT_const_value size based on variable size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132193 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-27 16:45:18 +00:00
Cameron Zwarich
f031d0977f Fix PR10029 - VerifyCoalescing failure on patterns_dfa.c of 445.gobmk. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132181 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-27 05:04:51 +00:00
Chad Rosier
62660310d9 Renamed llvm.x86.sse42.crc32 intrinsics; crc64 doesn't exist. 
crc32.[8|16|32] have been renamed to .crc32.32.[8|16|32] and
crc64.[8|16|32] have been renamed to .crc32.64.[8|64].




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132163 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-26 23:13:19 +00:00
Eli Friedman
9ebfceee05 Fix test on Windows. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132126 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-26 18:00:32 +00:00
Stuart Hastings
2aa0f23e1c Reverting 132105: it broke some LLVM-GCC DejaGNU tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132108 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-26 04:09:49 +00:00
Stuart Hastings
aa4e6afc9b Correctly handle a one-word struct passed byval on x86_64. 
rdar://problem/6920088


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132105 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-26 02:44:56 +00:00
Eli Friedman
76927d7303 Rewrite fast-isel integer cast handling to handle more cases, and to be simpler and more consistent. 
The practical effects here are that x86-64 fast-isel can now handle trunc from i8 to i1, and ARM fast-isel can handle many more constructs involving integers narrower than 32 bits (including loads, stores, and many integer casts).

rdar://9437928 .



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132099 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-25 23:49:02 +00:00
Rafael Espindola
fc2bb8c444 Replace the -unwind-tables option with a per function flag. This is more 
LTO friendly as we can now correctly merge files compiled with or without
-fasynchronous-unwind-tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132033 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-25 03:44:17 +00:00
Rafael Espindola
10c3e128ef Fix the defaults for .eh_frame. We were marking it as writable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131951 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-24 02:50:20 +00:00
Evan Cheng
b5a55d979c - Teach SelectionDAG::isKnownNeverZero to return true (op x, c) when c is 
non-zero.
- Teach X86 cmov optimization to eliminate the cmov from ctlz, cttz extension
  when the source of X86ISD::BSR / X86ISD::BSF is proven to be non-zero.

rdar://9490949


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131948 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-24 01:48:22 +00:00
Dan Gohman
1b58d4536a When checking for signed multiplication overflow, watch out for INT_MIN and -1. 
This fixes PR9845.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131919 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-23 21:07:39 +00:00
Devang Patel
26ffad8c49 Test case for r131908. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131909 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-23 17:49:29 +00:00
Devang Patel
35b6994608 While replacing all uses of a SDValue with another value, do not forget to transfer SDDbgValue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131907 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-23 17:35:08 +00:00
Benjamin Kramer
f55d26e788 Implement mulo x, 2 -> addo x, x in DAGCombiner. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131800 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-21 18:31:55 +00:00
Benjamin Kramer
a0962766ba Merge and FileCheckize test cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131799 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-21 18:31:48 +00:00
Eli Friedman
c088345f13 Add fast-isel support for byval calls on x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131764 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-20 22:21:04 +00:00
Stuart Hastings
0e29ed081b Re-commit 131641 with fixes; de-pseudoize MOVSX16rr8 and friends. 
rdar://problem/8614450


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131746 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-20 19:04:40 +00:00
Chad Rosier
5def9657e4 Fixed regression due to commit 131709, which disables vararg tail call optimizations on Win64 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131740 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-20 17:49:39 +00:00
Benjamin Kramer
eb274e6bdd Rename the "sandybridge" subtarget to "corei7-avx", for GCC compatibility. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131730 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-20 15:11:26 +00:00
Cameron Zwarich
21a70bf4a5 Fix PR9960 by teaching SimpleRegisterCoalescing::AdjustCopiesBackFrom() to preserve 
the phikill flag.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131717 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-20 03:54:04 +00:00
Chad Rosier
a166089f36 Don't attempt to tail call optimize for Win64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131709 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-20 00:59:28 +00:00
Evan Cheng
2e6496026f Revert r131664 and fix it in instcombine instead. rdar://9467055 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131708 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-20 00:54:37 +00:00
Eli Friedman
dc51575a5f Add fast-isel support for zeroext and signext ret instructions on x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131689 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-19 22:16:13 +00:00
Eric Christopher
2bbecd8f6d Oddly people want to use the 'r' constraint for fp constants on x86. 
Fixes rdar://9218925
Fixes PR9601


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131682 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-19 21:33:47 +00:00
Eli Friedman
24a69c7be2 Fix up this test to use explicit triples (Win64 passes a different number of arguments in registers). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131676 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-19 21:13:08 +00:00
Evan Cheng
0efaa5e6a1 crc32 with 64-bit output zeros upper 32-bits. rdar://9467055 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131664 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-19 18:57:12 +00:00
Stuart Hastings
26847d40db Move test to Transforms/InstCombine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131634 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-19 05:53:22 +00:00
Chad Rosier
871f664093 Enables vararg functions that pass all arguments via registers to be optimized into tail-calls when possible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131560 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 19:59:50 +00:00
Stuart Hastings
1f2cb9824d An imminent fix to the x86_64 byval logic will expose a flaw in the 
x86_64 sibcall logic.  I've filed PR9943 for the sibcall problem, and
this patch alters the testcase to work around the flaw.  When PR9943
is fixed, this patch should be reverted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131557 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 19:19:17 +00:00
Eli Friedman
5ceb66692e Force a triple on a couple of tests; we don't support fast-isel of ret on Win64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131540 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 17:16:37 +00:00
Stuart Hastings
11d26f109d Merge pmovzx test case into existing file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131539 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 17:02:04 +00:00
Eli Friedman
28b42afcb8 Make some of the fast-isel tests actually test fast-isel (and fix test failures). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131510 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 00:00:10 +00:00
Stuart Hastings
ca1ef48585 X86 pmovsx/pmovzx ignore the upper half of their inputs. 
rdar://problem/6945110


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131493 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 22:13:31 +00:00
Galina Kistanova
416b7117b7 Move test for appropriate directory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131477 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 19:06:43 +00:00
Eli Friedman
19515b4e52 Add x86 fast-isel for calls returning first-class aggregates. rdar://9435872. 
This is r131438 with a couple small fixes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131474 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 18:29:03 +00:00
Eli Friedman
c93943b6fe Back out r131444 and r131438; they're breaking nightly tests. I'll look into 
it more tomorrow.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131451 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 02:36:59 +00:00
Eli Friedman
b70eac42e7 Fix test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131444 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 00:39:14 +00:00
Evan Cheng
50ecb195e1 Add target triple so test doesn't fail on Windows machines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131439 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 00:15:58 +00:00
Eli Friedman
cdc9a20561 Add x86 fast-isel for calls returning first-class aggregates. rdar://9435872. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131438 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 00:13:47 +00:00
Jakob Stoklund Olesen
f5497fb1b4 Teach LiveInterval::isZeroLength about null SlotIndexes. 
When instructions are deleted, they leave tombstone SlotIndex entries.
The isZeroLength method should ignore these null indexes.

This causes RABasic to sometimes spill a callee-saved register in the
abi-isel.ll test, so don't run that test with -regalloc=basic.  Prioritizing
register allocation according to spill weight can cause more registers to be
used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131436 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 23:50:05 +00:00
Eli Friedman
57f4b03621 Remove dead code. Fix associated test to use FileCheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131424 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:28:22 +00:00
Eli Friedman
482feb33b2 Make fast-isel work correctly s/uadd.with.overflow intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131420 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:06:17 +00:00
Eli Friedman
2586b8f936 Basic fast-isel of extractvalue. Not too helpful on its own, given the IR clang generates for cases like this, but it should become more useful soon. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131417 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 20:27:46 +00:00
Rafael Espindola
a3f88148e6 Don't produce a vmovntdq if we don't have AVX support. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131330 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-14 00:30:01 +00:00
Evan Cheng
7139d35165 Re-enable branchfolding common code hoisting optimization. Fixed a liveness test bug and also taught it to update liveins. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131241 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-12 20:30:01 +00:00
Devang Patel
4243e67bd5 Identify end of prologue (and beginning of function body) using DW_LNS_set_prologue_end line table opcode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131194 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-11 19:22:19 +00:00
Nadav Rotem
42febc6e99 Fixes a bug in the DAGCombiner. LoadSDNodes have two values (data, chain). 
If there is a store after the load node, then there is a chain, which means
that there is another user. Thus, asking hasOneUser would fail. Instead we
ask hasNUsesOfValue on the 'data' value.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131183 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-11 14:40:50 +00:00
Nadav Rotem
4301222525 Add custom lowering of X86 vector SRA/SRL/SHL when the shift amount is a splat vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131179 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-11 08:12:09 +00:00
Rafael Espindola
41cdc16e73 Revert 131172 as it is causing clang to miscompile itself. I will try 
to provide a reduced testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131176 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-11 03:27:17 +00:00
Evan Cheng
7e20a574eb Add a late optimization to BranchFolding that hoist common instruction sequences 
at the start of basic blocks to their common predecessor. It's actually quite
common (e.g. about 50 times in JM/lencod) and has shown to be a nice code size
benefit. e.g.

        pushq   %rax
        testl   %edi, %edi
        jne     LBB0_2
## BB#1:
        xorb    %al, %al
        popq    %rdx
        ret
LBB0_2:
        xorb    %al, %al
        callq   _foo
        popq    %rdx
        ret

=>

        pushq   %rax
        xorb    %al, %al
        testl   %edi, %edi
        je      LBB0_2
## BB#1:
        callq   _foo
LBB0_2:
        popq    %rdx
        ret

rdar://9145558


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131172 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-11 01:03:01 +00:00
Benjamin Kramer
f51190b697 X86: Add a bunch of peeps for add and sub of SETB. 
"b + ((a < b) ? 1 : 0)" compiles into
	cmpl	%esi, %edi
	adcl	$0, %esi
instead of
	cmpl	%esi, %edi
	sbbl	%eax, %eax
	andl	$1, %eax
	addl	%esi, %eax

This saves a register, a false dependency on %eax
(Intel's CPUs still don't ignore it) and it's shorter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131070 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-08 18:36:07 +00:00
Jakob Stoklund Olesen
bf4e10f2f6 Emit a proper error message when register allocators run out of registers. 
This can't be just an assertion, users can always write impossible inline
assembly. Such an assembly statement should be included in the error message.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131024 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-06 21:58:30 +00:00
Eli Friedman
5e926ac651 Re-revert r130877; it's apparently causing a regression on 197.parser, 
possibly related to cbnz formation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130977 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-06 05:23:07 +00:00
Rafael Espindola
7af1a59382 Don't produce a __debug_frame. 
I tested both gdb on a bootstrapped clang and and the gdb testsuite on OS X (snow leopard)
and both are happy using __eh_frame.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130937 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-05 18:43:39 +00:00
Eli Friedman
23d3243e62 Avoid extra vreg copies for arguments passed in registers. Specifically, this can make MachineCSE more effective in some cases (especially in small functions). PR8361 / part of rdar://problem/8259436 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130928 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-05 16:53:34 +00:00
Jakob Stoklund Olesen
49b2803ec2 Prepare remaining tests for -join-physreg going away. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130893 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-04 23:54:59 +00:00
Jakob Stoklund Olesen
61396aebee Fix a batch of x86 tests to be coalescer independent. 
Most of these tests require a single mov instruction that can come either before
or after a 2-addr instruction. -join-physregs changes the behavior, but the
results are equivalent.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130891 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-04 23:54:51 +00:00
Eli Friedman
baf717a08a Re-commit r130862 with a minor change to avoid an iterator running off the edge in some cases. 
Original message:

Teach MachineCSE how to do simple cross-block CSE involving physregs.  This allows, for example, eliminating duplicate cmpl's on x86. Part of rdar://problem/8259436 .



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130877 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-04 22:10:36 +00:00
Eli Friedman
24d4c9911e Back out r130862; it appears to be breaking bootstrap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130867 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-04 20:48:42 +00:00
Eli Friedman
49cec1d818 Teach MachineCSE how to do simple cross-block CSE involving physregs. This allows, for example, eliminating duplicate cmpl's on x86. Part of rdar://problem/8259436 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130862 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-04 19:54:24 +00:00
Jakob Stoklund Olesen
20bc5acfb6 Don't depend on the physreg coalescing order. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130818 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-04 01:01:47 +00:00
Bill Wendling
9493a285d1 Replace the "movnt" intrinsics with a native store + nontemporal metadata bit. 
<rdar://problem/8460511>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130791 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-03 21:11:17 +00:00
Rafael Espindola
450a5a1207 Add r130623 back now that ELF has been fixed to work with -fno-dwarf2-cfi-asm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130658 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-01 15:44:13 +00:00
Rafael Espindola
5426a9ee37 GCC uses a different encoding of pointers in the FDE when using 
-fno-dwarf2-cfi-asm. Implement the same behavior.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130637 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-01 04:49:54 +00:00
Rafael Espindola
2b3e12d0cb Revert the previous patch while I figure out how to make llvm-gcc 
less agressive about disabling cfi on linux :-(

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130626 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-30 23:03:44 +00:00
Rafael Espindola
89fc9e8f5e Enable CFI on OS X. 
Currently the output should be almost identical to the one produced by CodeGen
to make the transition easier.

The only two differences I know of are:

* Some files get an extra advance loc of size 0. This will be fixed when
relaxations are enabled.
* The optimization of declaring an EH symbol as an external variable is not
implemented. This is a subset of adding the nounwind attribute, so we if really
this at -O0 we should probably do it at the IL level.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130623 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-30 22:29:54 +00:00
Jakob Stoklund Olesen
8e1e4cf226 Allow folded spills in test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130599 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-30 08:00:50 +00:00
Jakob Stoklund Olesen
d5b679c8ce Weekly fix of register allocation dependent unit tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130567 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-30 01:37:52 +00:00
Rafael Espindola
7b11a4cbdc Change DwarfCFIException's member variables to track what it actually 
emmits: .cfi_personality, .cfi_lsda and the moves.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130503 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 14:48:51 +00:00
Eli Friedman
d227eedf82 fast-isel sret calls, try 2. We actually do need to do something on x86-32. rdar://problem/9303592 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130429 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 20:19:12 +00:00
Eli Friedman
3fb6e00238 Actually revert r130348 correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130418 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 18:20:24 +00:00
Eli Friedman
6cf31b0a1a Revert r130348; causing buildbot issues on x86-32. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130412 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 18:06:10 +00:00
Devang Patel
c26f5447e3 Teach dwarf writer to handle complex address expression for .debug_loc entries. 
This fixes clang generated blocks' variables' debug info.
Radar 9279956.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130373 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 02:22:40 +00:00
Eli Friedman
bd1253809b Fix a silly mistake in r130338. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130360 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:42:03 +00:00
Eli Friedman
8211a6a61d fast-isel sret. We actually don't need to do anything special on x86. :) rdar://problem/9303592 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130348 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 23:58:52 +00:00
Eli Friedman
2790ba8e5a Make the fast-isel code for literal 0.0 a bit shorter/faster, since 0.0 is common. rdar://problem/9303592 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130338 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 22:41:55 +00:00
Eli Friedman
547eb4fd56 Fix an edge case involving branches in fast-isel on x86. 
rdar://problem/9303306 .



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130272 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 01:34:27 +00:00
Evan Cheng
554daa67bd Be careful about scheduling nodes above previous calls. It increase usages of 
more callee-saved registers and introduce copies. Only allows it if scheduling
a node above calls would end up lessen register pressure.

Call operands also has added ABI restrictions for register allocation, so be
extra careful with hoisting them above calls.

rdar://9329627


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130245 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 21:31:35 +00:00
Benjamin Kramer
efa81404a5 Force a triple on this test to unbreak windows buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130226 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 18:47:43 +00:00
Dan Gohman
a61e73bda5 Fast-isel support for simple inline asms. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130205 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 17:18:34 +00:00
Rafael Espindola
cace5b8caf Add test for PR9743. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130198 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 14:17:42 +00:00
Devang Patel
06104e3743 A dbg.declare may not be in entry block, even if it is referring to an incoming argument. However, It is appropriate to emit DBG_VALUE referring to this incoming argument in entry block in MachineFunction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130129 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-25 16:33:52 +00:00
Benjamin Kramer
a42a757176 Make tests more useful. 
lit needs a linter ...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130126 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-25 10:12:01 +00:00
NAKAMURA Takumi
624dc1d4ab test/CodeGen/X86/shrink-compare.ll: Relax expressions for Win64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130039 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-23 00:15:45 +00:00
Chris Lattner
b686af053e Recommit the fix for rdar://9289512 with a couple tweaks to 
fix bugs exposed by the gcc dejagnu testsuite:
1. The load may actually be used by a dead instruction, which
   would cause an assert.
2. The load may not be used by the current chain of instructions,
   and we could move it past a side-effecting instruction. Change
   how we process uses to define the problem away.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130018 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-22 21:59:37 +00:00
Benjamin Kramer
e7cf062537 DAGCombine: fold "(zext x) == C" into "x == (trunc C)" if the trunc is lossless. 
On x86 this allows to fold a load into the cmp, greatly reducing register pressure.
  movzbl	(%rdi), %eax
  cmpl	$47, %eax
->
  cmpb	$47, (%rdi)

This shaves 8k off gcc.o on i386. I'll leave applying the patch in README.txt to Chris :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130005 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-22 18:47:44 +00:00