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Author SHA1 Message Date
Nadav Rotem
b6fbec3a54 This patch is another step in the direction of adding vector select. In this 
patch we add a flag to enable a new type legalization decision - to promote
integer elements in vectors. Currently, the rest of the codegen does not support
this kind of legalization.  This flag will be removed when the transition is
complete.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132394 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-01 12:51:46 +00:00
Nadav Rotem
b6aacae941 Refactor the type legalizer. Switch TargetLowering to a new enum - LegalizeTypeAction. 
This patch does not change the behavior of the type legalizer. The codegen
produces the same code.
This infrastructural change is needed in order to enable complex decisions
for vector types (needed by the vector-select patch).




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132263 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-28 17:57:14 +00:00
Nadav Rotem
2d6dcb34b7 Refactor getActionType and getTypeToTransformTo ; place all of the 'decision' 
code in one place. Re-apply 131534 and fix the multi-step promotion of integers.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132217 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-27 21:03:13 +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
Devang Patel
8a115d5bf4 Remove unused statistical counter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132087 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-25 21:55:40 +00:00
Devang Patel
8ec0c1c07b Remove dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131974 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-24 18:27:52 +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
Devang Patel
9728ea2447 Revert 121907 (it causes llc crash) and apply original patch from PR9817. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131926 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-23 22:04:42 +00:00
Devang Patel
233857537f Preserve debug info during iSel by keeping DanglingDebugInfoMap live until end of function. 
Patch by Micah Villmow


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131908 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-23 17:44:13 +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
Chris Lattner
9db20f3bd8 Eliminate some temporary variables, and don't call getByValTypeAlignment 
when we're just going to throw the result away.  No functionality change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131880 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-22 23:23:02 +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
Cameron Zwarich
5a4b3d8c8f Fix PR9955 by only attaching load memory operands to load instructions and 
similarly for stores. Now "make check" passes with the MachineVerifier forced
on with the VerifyCoalescing option!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131705 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-19 23:44:34 +00:00
Stuart Hastings
3dfc4b1222 Update some currently-disabled code, preparing for eventual use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131663 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-19 18:48:20 +00:00
Duncan Sands
d6dde76090 Revert commit 131534 since it seems to have broken several buildbots. 
Original log entry:
Refactor getActionType and getTypeToTransformTo ; place all of the 'decision'
code in one place.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131536 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 14:57:56 +00:00
Nadav Rotem
fe3f5d7538 Refactor getActionType and getTypeToTransformTo ; place all of the 'decision' 
code in one place.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131534 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 12:26:38 +00:00
Eli Friedman
9c4dae6b0b Make fast-isel miss counting in -stats and -fast-isel-verbose take terminators into account; since there are many fewer isel misses with recent changes, misses caused by terminators are more significant. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131502 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 23:02:10 +00:00
Dan Gohman
1b32896bd2 Misc. code cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131497 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 22:22:52 +00:00
Dan Gohman
71dc7c9d89 Misc. code cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131495 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 22:20:36 +00:00
Dan Gohman
975716af1b Delete unused variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131430 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 22:19:54 +00:00
Dan Gohman
b3dbd4a0b6 Trim #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131429 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 22:14:50 +00:00
Dan Gohman
f316eb7074 Fix whitespace and 80-column violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131428 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 22:09:53 +00:00
Jim Grosbach
62427ae8d3 Track how many insns fast-isel successfully selects as well as how many it 
misses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131426 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:51:07 +00:00
Devang Patel
227dfdb3c4 Preserve debug info for unused zero extended boolean argument. 
Radar 9422775.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131422 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:24:05 +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
a4c920db7a Fix silly typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131419 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 20:34:53 +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
0e00c6c561 Don't do tail calls in a function that call setjmp. The stack might be 
corrupted when setjmp returns again.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131399 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 03:05:33 +00:00
Eli Friedman
d0118a2371 Fix a FIXME by moving the fast-isel implementation of the objectsize intrinsic from the x86 code to the generic code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131332 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-14 00:47:51 +00:00
Rafael Espindola
3fa8283744 Make codegen able to handle values of empty types. This is one way 
to fix PR9900. I will keep it open until sable is able to comment on it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131294 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-13 15:18:06 +00:00
Stuart Hastings
88882247d2 Since I can't reproduce the failures from 131261, re-trying with a 
simplified version.  <rdar://problem/9298790>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131274 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-13 00:51:54 +00:00
Stuart Hastings
8ad145d729 Revert 131266 and 131261 due to buildbot complaints. 
rdar://problem/9298790


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131269 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-13 00:15:17 +00:00
Stuart Hastings
5adc646380 Non-fast-isel followup to 129634; correctly handle branches controlled 
by non-CMP expressions.  The executable test case (129821) would test
this as well, if we had an "-O0 -disable-arm-fast-isel" LLVM-GCC
tester.  Alas, the ARM assembly would be very difficult to check with
FileCheck.

The thumb2-cbnz.ll test is affected; it generates larger code (tst.w
vs. cmp #0), but I believe the new version is correct.
rdar://problem/9298790


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131261 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-12 23:36:41 +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
Bill Wendling
61512ba251 Give the 'eh.sjlj.dispatchsetup' intrinsic call the value coming from the setjmp 
intrinsic call. This prevents it from being reordered so that it appears
*before* the setjmp intrinsic (thus making it completely useless).
<rdar://problem/9409683>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131174 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-11 01:11:55 +00:00
Eli Friedman
7f33d677a9 Disable my little CopyToReg argument hack with fast-isel. rdar://problem/9413587 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131156 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 21:50:58 +00:00
Stuart Hastings
d673057c96 Correctly walk through nested and adjacent CALLSEQ_START nodes. No 
test case; I've only seen this on a release branch, and I can't get it
to reproduce on trunk.  rdar://problem/7662569


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131152 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 21:20:03 +00:00
Eric Christopher
cef81b7e51 Look through struct wrapped types for inline asm statments. 
Patch by Evan Cheng.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131093 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-09 20:04:43 +00:00
Duncan Sands
c356f33aaf Indent properly, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131082 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-09 08:03:33 +00:00
Evan Cheng
ce1cdac942 80 col violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131015 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-06 20:52:23 +00:00
Eli Friedman
fc5d305597 Make the logic for determining function alignment more explicit. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131012 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-06 20:34:06 +00:00
Eli Friedman
8265e6ab4f Use array_lengthof. No functional change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131008 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-06 19:50:10 +00:00
Owen Anderson
d71867a8f4 Allow FastISel of three-register-operand instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130934 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-05 17:59:04 +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
Eli Friedman
6005b875b0 Small syntax cleanup; we don't need to #define constants in C++. No functionality change intended. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130926 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-05 16:25:23 +00:00
Owen Anderson
f7710af4ba Other parts of the SelectionDAG framework assume that targets use their pointer type for vector indices. Make the vector unrolling code respect that. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130733 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-02 22:25:45 +00:00
Eli Friedman
b2b03fc2fa Make FastEmit_ri_ try a bit harder to succeed for supported operations; FastEmit_i can fail for non-Thumb2 ARM. Makes ARMSimplifyAddress work correctly, and reduces the number of fast-isel bailouts on non-Thumb ARM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130560 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 23:34:52 +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
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
161b887506 Remove unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130337 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 22:21:02 +00:00