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303 Commits

Author SHA1 Message Date
Devang Patel
8e60ff11db Preserve debug info for unused zero extended boolean argument. 
Radar 9422775.

llvm-svn: 131422
 2011-05-16 21:24:05 +00:00
Rafael Espindola
e53b7d1a11 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.

llvm-svn: 131294
 2011-05-13 15:18:06 +00:00
Bill Wendling
50117f8186 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>

llvm-svn: 131174
 2011-05-11 01:11:55 +00:00
Eli Friedman
768de0a0f8 Disable my little CopyToReg argument hack with fast-isel. rdar://problem/9413587 . 
llvm-svn: 131156
 2011-05-10 21:50:58 +00:00
Eric Christopher
4480428474 Look through struct wrapped types for inline asm statments. 
Patch by Evan Cheng.

llvm-svn: 131093
 2011-05-09 20:04:43 +00:00
Evan Cheng
d26fc5e013 80 col violations. 
llvm-svn: 131015
 2011-05-06 20:52:23 +00:00
Eli Friedman
441a01a2b8 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 . 
llvm-svn: 130928
 2011-05-05 16:53:34 +00:00
Devang Patel
734f2218ac 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. 
llvm-svn: 130129
 2011-04-25 16:33:52 +00:00
Chris Lattner
0ab5e2cded Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129558
 2011-04-15 05:18:47 +00:00
Chris Lattner
cfe5aa65d2 Avoid excess precision issues that lead to generating host-compiler-specific code. 
Switch lowering probably shouldn't be using FP for this.  This resolves PR9581.

llvm-svn: 129199
 2011-04-09 06:57:13 +00:00
Evan Cheng
74d92c1924 Change -arm-trap-func= into a non-arm specific option. Now Intrinsic::trap is lowered into a call to the specified trap function at sdisel time. 
llvm-svn: 129152
 2011-04-08 21:37:21 +00:00
Bill Wendling
dd4dcd549b Revamp the SjLj "dispatch setup" intrinsic. 
It needed to be moved closer to the setjmp statement, because the code directly
after the setjmp needs to know about values that are on the stack. Also, the
'bitcast' of the function context was causing a dead load. This wouldn't be too
horrible, except that at -O0 it wasn't optimized out, and because it wasn't
using the correct base pointer (if there is a VLA), it would try to access a
value from a garbage address.
<rdar://problem/9130540>

llvm-svn: 128873
 2011-04-05 01:37:43 +00:00
Evan Cheng
8b1bca1998 Add comments. 
llvm-svn: 128730
 2011-04-01 19:57:01 +00:00
Evan Cheng
8d68ebd42a Assign node order numbers to results of call instruction lowering. This should improve src line debug info when sdisel is used. rdar://9199118 
llvm-svn: 128728
 2011-04-01 19:42:22 +00:00
Benjamin Kramer
355ce07425 Turn SelectionDAGBuilder::GetRegistersForValue into a local function. 
It couldn't be used outside of the file because SDISelAsmOperandInfo
is local to SelectionDAGBuilder.cpp. Making it a static function avoids
a weird linkage dance.

llvm-svn: 128342
 2011-03-26 16:35:10 +00:00
Cameron Zwarich
2ef0c69df1 Move more logic into getTypeForExtArgOrReturn. 
llvm-svn: 127809
 2011-03-17 14:53:37 +00:00
Cameron Zwarich
34e7b3f77e Rename getTypeForExtendedInteger() to getTypeForExtArgOrReturn(). 
llvm-svn: 127807
 2011-03-17 14:21:56 +00:00
Cameron Zwarich
ac106273d4 The x86-64 ABI says that a bool is only guaranteed to be sign-extended to a byte 
rather than an int. Thankfully, this only causes LLVM to miss optimizations, not
generate incorrect code.

This just fixes the zext at the return. We still insert an i32 ZextAssert when
reading a function's arguments, but it is followed by a truncate and another i8
ZextAssert so it is not optimized.

llvm-svn: 127766
 2011-03-16 22:20:18 +00:00
Cameron Zwarich
d1ad9bc277 Don't recompute something that we already have in a local variable. 
llvm-svn: 127764
 2011-03-16 22:20:07 +00:00
Andrew Trick
710d5da306 Replace -dag-chain-limit flag with constant. It has survived a release cycle without being touched, so no longer needs to pollute the hidden-help text. 
llvm-svn: 127468
 2011-03-11 17:46:59 +00:00
Owen Anderson
b2c80da4ae Allow targets to specify a the type of the RHS of a shift parameterized on the type of the LHS. 
llvm-svn: 126518
 2011-02-25 21:41:48 +00:00
Jim Grosbach
14a07365cb Fix formatting of debug helper string. 
llvm-svn: 126471
 2011-02-25 03:59:03 +00:00
Cameron Zwarich
6470647383 Refactor the LiveOutInfo interface into a few methods on FunctionLoweringInfo 
and make the actual map private.

llvm-svn: 126376
 2011-02-24 10:00:08 +00:00
Cameron Zwarich
f8b22b3483 Roll out r126169 and r126170 in an attempt to fix the selfhost bot. 
llvm-svn: 126185
 2011-02-22 03:24:52 +00:00
Cameron Zwarich
800f85baf9 Merge information about the number of zero, one, and sign bits of live-out registers 
at phis. This enables us to eliminate a lot of pointless zexts during the DAGCombine
phase. This fixes <rdar://problem/8760114>.

llvm-svn: 126170
 2011-02-22 00:46:27 +00:00
Devang Patel
b7ae3ccb84 Do not lose debug info of an inlined function argument even if the argument is only used through GEPs. 
This time with a fix that avoids using invalidated DenseMap iterator.

llvm-svn: 125984
 2011-02-18 22:43:42 +00:00
Cameron Zwarich
0a1a36dc46 Roll out r125794 to help diagnose the llvm-gcc-i386-linux-selfhost failure. 
llvm-svn: 125830
 2011-02-18 04:58:10 +00:00
Devang Patel
f922a431ee Do not lose debug info of an inlined function argument even if the argument is only used through GEPs. 
llvm-svn: 125794
 2011-02-17 23:33:27 +00:00
Chris Lattner
69229316aa convert ConstantVector::get to use ArrayRef. 
llvm-svn: 125537
 2011-02-15 00:14:00 +00:00
Chris Lattner
34442e6ebf revert my ConstantVector patch, it seems to have made the llvm-gcc 
builders unhappy.

llvm-svn: 125504
 2011-02-14 18:15:46 +00:00
Chris Lattner
d9f5b88548 Switch ConstantVector::get to use ArrayRef instead of a pointer+size 
idiom.  Change various clients to simplify their code.

llvm-svn: 125487
 2011-02-14 07:55:32 +00:00
Chris Lattner
e95d195014 Revisit my fix for PR9028: the issue is that DAGCombine was 
generating i8 shift amounts for things like i1024 types.  Add
an assert in getNode to prevent this from occuring in the future,
fix the buggy transformation, revert my previous patch, and
document this gotcha in ISDOpcodes.h

llvm-svn: 125465
 2011-02-13 19:09:16 +00:00
Chris Lattner
d5f0b1148a when legalizing extremely wide shifts, make sure that 
the shift amounts are in a suitably wide type so that
we don't generate out of range constant shift amounts.

This fixes PR9028.

llvm-svn: 125458
 2011-02-13 09:10:56 +00:00
Chris Lattner
2a720d933a fix visitShift to properly zero extend the shift amount if the provided operand 
is narrower than the shift register.  Doing an anyext provides undefined bits in
the top part of the register.

llvm-svn: 125457
 2011-02-13 09:02:52 +00:00
Nick Lewycky
0af77fd45b Fix build with stdcxx by using llvm::next. Patch by Joerg Sonnenberger! 
llvm-svn: 124472
 2011-01-28 04:00:15 +00:00
Devang Patel
70f8e5962a Resolve DanglingDbgValue of PHI nodes where the use follows dbg.value intrinisic. 
llvm-svn: 124203
 2011-01-25 18:09:58 +00:00
Devang Patel
533479544b Speculatively revert r124138. 
llvm-svn: 124142
 2011-01-24 20:04:37 +00:00
Devang Patel
8cc5355c90 Resolve DanglingDbgValue of PHI nodes where the use follows dbg.value intrinisic. 
llvm-svn: 124138
 2011-01-24 19:24:37 +00:00
Anton Korobeynikov
2f93128109 Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there. 
llvm-svn: 123170
 2011-01-10 12:39:04 +00:00
Jakob Stoklund Olesen
2fb5b31578 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.

llvm-svn: 123155
 2011-01-10 02:58:51 +00:00
Jakob Stoklund Olesen
793d7b7626 Use an IndexedMap for LiveOutRegInfo to hide its dependence on TargetRegisterInfo::FirstVirtualRegister. 
llvm-svn: 123096
 2011-01-08 23:10:50 +00:00
Evan Cheng
6eb516dbea 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.

llvm-svn: 123044
 2011-01-07 23:50:32 +00:00
Bob Wilson
8265d56638 Add ARM patterns to match EXTRACT_SUBVECTOR nodes. 
Also fix an off-by-one in SelectionDAGBuilder that was preventing shuffle
vectors from being translated to EXTRACT_SUBVECTOR.
Patch by Tim Northover.

The test changes are needed to keep those spill-q tests from testing aligned
spills and restores.  If the only aligned stack objects are spill slots, we
no longer realign the stack frame.  Prior to this patch, an EXTRACT_SUBVECTOR
was legalized by loading from the stack, which created an aligned frame index.
Now, however, there is nothing except the spill slot in the stack frame, so
I added an aligned alloca.

llvm-svn: 122995
 2011-01-07 04:59:04 +00:00
Evan Cheng
ac730dd2d1 Avoid zero extend bit test operands to pointer type if all the masks fit in 
the original type of the switch statement key.
rdar://8781238

llvm-svn: 122935
 2011-01-06 01:02:44 +00:00
Chris Lattner
3e5fbd74ed 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.

llvm-svn: 122310
 2010-12-21 02:38:05 +00:00
Chris Lattner
cb404360ca reduce indentation by using continue, no functionality change. 
llvm-svn: 121662
 2010-12-13 01:11:17 +00:00
Jay Foad
583abbc4df PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and 
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method
trunc(), to be const and to return a new value instead of modifying the
object in place.

llvm-svn: 121120
 2010-12-07 08:25:19 +00:00
Devang Patel
c24048a718 If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0. 
llvm-svn: 121059
 2010-12-06 22:39:26 +00:00
Chris Lattner
ea41dfe385 add TLI support indicating that jumps are more expensive than logical operations 
and use this to disable a specific optimization.  Patch by Micah Villmow!

llvm-svn: 120435
 2010-11-30 18:12:52 +00:00
Wesley Peck
527da1b6e2 Renaming ISD::BIT_CONVERT to ISD::BITCAST to better reflect the LLVM IR concept. 
llvm-svn: 119990
 2010-11-23 03:31:01 +00:00