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1206 Commits

Author SHA1 Message Date
Evan Cheng ebe47c872f Avoid using f64 to lower memcpy from constant string. It's cheaper to use i32 store of immediates. 
llvm-svn: 100751
 2010-04-08 07:37:57 +00:00
Chris Lattner 2104b8d36e rename llvm::llvm_report_error -> llvm::report_fatal_error 
llvm-svn: 100709
 2010-04-07 22:58:41 +00:00
John McCall 6ac5cc973c Clean up some signedness oddities in this code noticed by clang. 
llvm-svn: 100599
 2010-04-07 01:49:15 +00:00
Chris Lattner 305f2efb63 unthread MMI from FastISel 
llvm-svn: 100416
 2010-04-05 06:05:26 +00:00
Chris Lattner 7cfa70e9b3 fastisel doesn't need DwarfWriter, remove some tendricles. 
llvm-svn: 100381
 2010-04-05 02:19:28 +00:00
Mon P Wang c576ee9040 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100304
 2010-04-04 03:10:48 +00:00
Chris Lattner 6f306d7d30 use DebugLoc default ctor instead of DebugLoc::getUnknownLoc() 
llvm-svn: 100214
 2010-04-02 20:16:16 +00:00
Evan Cheng 61399375a2 Correctly lower memset / memcpy of undef. It should be a nop. PR6767. 
llvm-svn: 100208
 2010-04-02 19:36:14 +00:00
Mon P Wang 999c1b927b Revert r100191 since it breaks objc in clang 
llvm-svn: 100199
 2010-04-02 18:43:02 +00:00
Mon P Wang a972ab8564 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100191
 2010-04-02 18:04:15 +00:00
Eric Christopher 06a1639b98 Remove FIXME - if there's a better way to do this it isn't here. 
llvm-svn: 100176
 2010-04-02 04:32:37 +00:00
Chandler Carruth 8d6d0d4c58 Disambiguate conditional expression for newer GCCs. 
llvm-svn: 100167
 2010-04-02 01:31:24 +00:00
Evan Cheng f997c31598 In 64-bit mode, use i64 to lower memcpy / memset instead of f64. 
llvm-svn: 100137
 2010-04-01 20:27:45 +00:00
Evan Cheng d9929f03cf Add comments about DstAlign and SrcAlign. 
llvm-svn: 100132
 2010-04-01 20:10:42 +00:00
Evan Cheng 4c014c892a - Avoid using floating point stores to implement memset unless the value is zero. 
- Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type.

llvm-svn: 100118
 2010-04-01 18:19:11 +00:00
Evan Cheng 43cd9e3845 Fix sdisel memcpy, memset, memmove lowering: 
1. Makes it possible to lower with floating point loads and stores.
2. Avoid unaligned loads / stores unless it's fast.
3. Fix some memcpy lowering logic bug related to when to optimize a
   load from constant string into a constant.
4. Adjust x86 memcpy lowering threshold to make it more sane.
5. Fix x86 target hook so it uses vector and floating point memory
   ops more effectively.
rdar://7774704

llvm-svn: 100090
 2010-04-01 06:04:33 +00:00
Bob Wilson 6f7fd28824 Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots. 
llvm-svn: 99948
 2010-03-30 22:27:04 +00:00
Mon P Wang 7460571381 Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset, 
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
A update of langref will occur in a subsequent checkin.

llvm-svn: 99928
 2010-03-30 20:55:56 +00:00
Chris Lattner 9897043928 Rip out the 'is temporary' nonsense from the MCContext interface to 
create symbols.  It is extremely error prone and a source of a lot
of the remaining integrated assembler bugs on x86-64.

This fixes rdar://7807601.

llvm-svn: 99902
 2010-03-30 18:10:53 +00:00
Eric Christopher c1ddaaf5b1 Add FIXME for operand promotion. 
llvm-svn: 99859
 2010-03-30 01:04:59 +00:00
Benjamin Kramer 2788f797ca Make isInt?? and isUint?? template specializations of the generic versions. This 
makes calls a little bit more consistent and allows easy removal of the
specializations in the future. Convert all callers to the templated functions.

llvm-svn: 99838
 2010-03-29 21:13:41 +00:00
Evan Cheng 3365fb1412 Do not sibcall if stack needs to be dynamically aligned. 
llvm-svn: 99620
 2010-03-26 16:26:03 +00:00
Evan Cheng 00a620c61e Allow trivial sibcall of vararg callee when no arguments are being passed. 
llvm-svn: 99598
 2010-03-26 02:13:13 +00:00
Nate Begeman 2ceb288416 Per chris's request, add some comments. 
llvm-svn: 99434
 2010-03-24 22:19:06 +00:00
Nate Begeman 583e05d8ce BUILD_VECTOR was missing out on some prime opportunities to use SSE 4.1 inserts. 
llvm-svn: 99423
 2010-03-24 20:49:50 +00:00
Evan Cheng 3f6f769c4f If call result is in ST0 and it is not being passed to the caller's 
caller, then it is not safe to optimize the call into a sibcall since
the call result has to be popped off the x87 stack.

llvm-svn: 99032
 2010-03-20 02:58:15 +00:00
Daniel Dunbar 5599256415 MC: Allow modifiers in MCSymbolRefExpr, and eliminate X86MCTargetExpr. 
- Although it would be nice to allow this decoupling, the assembler needs to be able to reason about MCSymbolRefExprs in too many places to make this viable. We can use a target specific encoding of the variant if this becomes an issue.
 - This patch also extends llvm-mc to support parsing of the modifiers, as opposed to lumping them in with the symbol.

llvm-svn: 98592
 2010-03-15 23:51:06 +00:00
Dan Gohman c6ddebd6d1 Recognize code for doing vector gather/scatter index calculations with 
32-bit indices. Instead of shuffling each element out of the index vector,
when all indices are needed, just store the input vector to the stack and
load the elements out.

llvm-svn: 98588
 2010-03-15 23:23:03 +00:00
Bill Wendling bbcaa40227 Now that the default for Darwin platforms is to place the LSDA into the TEXT 
section, remove the target-specific code that performs this.

llvm-svn: 98580
 2010-03-15 21:09:38 +00:00
Bill Wendling 0344874921 Place the LSDA into the TEXT section for x86 Darwin. If the global it's pointing 
to is local to the translation unit, we need to place fill the value of that
symbol into the non-lazy pointer.

This should conclude all Darwin changes for placing the LSDA into the TEXT
section. There is some cleanup to do. I.e., there's no longer a special need for
target-specific code here. But that can come later.

llvm-svn: 98564
 2010-03-15 19:04:37 +00:00
Evan Cheng ae5edee6c8 Avoid sibcall optimization if either caller or callee is using sret semantics. 
llvm-svn: 98561
 2010-03-15 18:54:48 +00:00
Chris Lattner 6feb7e3325 fix PR6605, X86ISD::CMP always returns i32 (EFLAGS), not 
the operand type.

llvm-svn: 98507
 2010-03-14 18:44:35 +00:00
Chris Lattner a30d4ce194 add support for pentium class CPUs which do not have cmov, 
PR4841.  Patch by Craig Smith!

llvm-svn: 98496
 2010-03-14 18:31:44 +00:00
Evan Cheng d703df67ce Do not force indirect tailcall through fixed registers: eax, r11. Add support to allow loads to be folded to tail call instructions. 
llvm-svn: 98465
 2010-03-14 03:48:46 +00:00
Chris Lattner 29bdac4928 eliminate the now-unneeded context argument of MBB::getSymbol() 
llvm-svn: 98451
 2010-03-13 21:04:28 +00:00
Bill Wendling 3d0cd822a9 Add a beta-test for placing the LSDA into the TEXT section on X86. 
llvm-svn: 98370
 2010-03-12 19:20:40 +00:00
Benjamin Kramer d69ee90f2f Use StringRef::substr instead of std::string::substr to avoid using a free'd 
string temporary. This should fix PR6590.

llvm-svn: 98349
 2010-03-12 13:54:59 +00:00
Dan Gohman 576aec4363 Remove getWidenVectorType, which is no longer used. 
llvm-svn: 98289
 2010-03-11 21:39:57 +00:00
Bill Wendling 00810c39da revert r98270. 
llvm-svn: 98281
 2010-03-11 19:50:31 +00:00
Evan Cheng 31fe835bf2 Bad bad bug. x86 force indirect tail call address into eax when it's meant to force it into a call preserved register instead. Change it to ecx for now. 
llvm-svn: 98270
 2010-03-11 18:49:14 +00:00
Chris Lattner a179e4d0a8 add support, testcases, and dox for the new GHC calling 
convention.  Patch by David Terei!

llvm-svn: 98212
 2010-03-11 00:22:57 +00:00
Dale Johannesen 49de0607a8 Progress towards shepherding debug info through SelectionDAG. 
No functional effect yet.  This is still evolving and should
not be viewed as final.

llvm-svn: 98195
 2010-03-10 22:13:47 +00:00
Chris Lattner ac2361a9b0 set the temporary bit on MCSymbols correctly. 
llvm-svn: 98124
 2010-03-10 02:25:11 +00:00
Anton Korobeynikov d5e3fd6dc8 Lower dynamic stack allocation on mingw32 to separate instruction. 
We cannot use a normal call here since it has extra unmodelled side
effects (it changes stack pointer). This should fix PR5292.

llvm-svn: 97884
 2010-03-06 19:32:29 +00:00
Evan Cheng 27494232d4 Fix typo. 
llvm-svn: 97818
 2010-03-05 19:55:55 +00:00
Evan Cheng 654ec2a663 Fix an oops in x86 sibcall optimization. If the ByVal callee argument is itself passed as a pointer, then it's obviously not safe to do a tail call. 
llvm-svn: 97797
 2010-03-05 08:38:04 +00:00
Evan Cheng cf67ffa500 Rever 96389 and 96990. They are causing some miscompilation that I do not fully understand. 
llvm-svn: 97782
 2010-03-05 03:08:23 +00:00
Dan Gohman b8ebd408da Fix recognition of 16-bit bswap for C front-ends which emit the 
clobber registers in a different order.

llvm-svn: 97741
 2010-03-04 19:58:08 +00:00
Bill Wendling 78c5b7a76d Remove dead parameter passing. 
llvm-svn: 97536
 2010-03-02 01:55:18 +00:00
Evan Cheng 87d50aa18a Remove the optimize for code size limitation on r67917. Optimize 64-bit imul by constants into leas + shl regardless if optimizing for code size. The size saving from using imulq isn't worth it. Also, the lea and shl instructions may expose further optimization. 
llvm-svn: 97507
 2010-03-01 22:00:11 +00:00