Commit Graph

104646 Commits

Author SHA1 Message Date
Evan Cheng 1355bbdd11 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

llvm-svn: 130245
2011-04-26 21:31:35 +00:00
Devang Patel e67eca43d6 We need pointer size in bits here.
llvm-svn: 130244
2011-04-26 21:16:49 +00:00
Evan Cheng dbb86b8108 This test should be in MC. It breaks with changes to scheduling / register allocation so it's being removed.
llvm-svn: 130243
2011-04-26 21:09:04 +00:00
Argyrios Kyrtzidis ae40e4e10e Gcc pads the size of an array using the alignment of its elements.
The size of the array may not be aligned according to alignment of its elements if an alignment attribute is
specified in a typedef. Fixes rdar://8665729 & http://llvm.org/PR5637.

llvm-svn: 130242
2011-04-26 21:05:39 +00:00
Chris Lattner 029afe4787 make a couple of changes to the standard pass pipeline:
1. Only run the early (in the module pass pipe) instcombine/simplifycfg
   if the "unit at a time" passes they are cleaning up after runs.

2. Move the "clean up after the unroller" pass to the very end of the
   function-level pass pipeline.  Loop unroll uses instsimplify now,
   so it doesn't create a ton of trash.  Moving instcombine later allows
   it to clean up after opportunities are exposed by GVN, DSE, etc.

3. Introduce some phase ordering tests for things that are specifically
   intended to be simplified by the full optimizer as a whole.

This resolves PR2338, and is progress towards PR6627, which will be 
generating code that looks similar to test2.

llvm-svn: 130241
2011-04-26 20:45:33 +00:00
Johnny Chen 489b52572c Simplify the parsing of ARCH and Compiler specs.
llvm-svn: 130240
2011-04-26 20:45:00 +00:00
John McCall 0009fcc39e Make yet another placeholder type, this one marking that an expression is a bound
member function, i.e. something of the form 'x.f' where 'f' is a non-static
member function.  Diagnose this in the general case.  Some of the new diagnostics
are probably worse than the old ones, but we now get this right much more
universally, and there's certainly room for improvement in the diagnostics.

llvm-svn: 130239
2011-04-26 20:42:42 +00:00
Chris Lattner 1b06c71668 Transform: "icmp eq (trunc (lshr(X, cst1)), cst" to "icmp (and X, mask), cst"
when X has multiple uses.  This is useful for exposing secondary optimizations,
but the X86 backend isn't ready for this when X has a single use.  For example,
this can disable load folding.

This is inching towards resolving PR6627.

llvm-svn: 130238
2011-04-26 20:18:20 +00:00
Chris Lattner 31b106d7dd some random cleanups, no functionality change.
llvm-svn: 130237
2011-04-26 20:02:45 +00:00
Chris Lattner 6320840583 add an m_ConstantInt matching predicate that binds to a uint64_t, and add an m_OneUse()
predicate that matches if the subexpr has a single use.

llvm-svn: 130235
2011-04-26 19:50:39 +00:00
Jim Grosbach d4b733e4d8 ARM and Thumb2 support for atomic MIN/MAX/UMIN/UMAX loads.
rdar://9326019

llvm-svn: 130234
2011-04-26 19:44:18 +00:00
Daniel Dunbar a59b0a6e3c IRgen/Darwin: Fix refacto introduced in Triple changes.
llvm-svn: 130233
2011-04-26 19:43:00 +00:00
Rafael Espindola a4fa5ce911 Print the label if we will use it in debug_frame.
llvm-svn: 130232
2011-04-26 19:26:53 +00:00
Devang Patel ba5fbf17df Refactor code. Keep dwarf register operation selection logic at one place.
llvm-svn: 130231
2011-04-26 19:06:18 +00:00
Jakob Stoklund Olesen 3b7b7bcc7f Use the new TRI->getLargestLegalSuperClass hook to constrain register class inflation.
This has two effects: 1. We never inflate to a larger register class than what
the sub-target can handle. 2. Completely unconstrained virtual registers get the
largest possible register class.

llvm-svn: 130229
2011-04-26 18:52:36 +00:00
Jakob Stoklund Olesen 803a200077 Add a TRI::getLargestLegalSuperClass hook to provide an upper limit on register class inflation.
The hook will be used by the register allocator when recomputing register
classes after removing constraints.

Thumb1 code doesn't allow anything larger than tGPR, and x86 needs to ensure
that the spill size doesn't change.

llvm-svn: 130228
2011-04-26 18:52:33 +00:00
Johnny Chen a85bf380ba Modify EmulateInstructionARM::SetArchitecture() to treat "arm" and "thumb" as wild card architectures
for now, in order to fix the test failure for the 'arm_emulation' directory.
There might be a better way.

llvm-svn: 130227
2011-04-26 18:51:57 +00:00
Benjamin Kramer 1d4c835089 Force a triple on this test to unbreak windows buildbots.
llvm-svn: 130226
2011-04-26 18:47:43 +00:00
Devang Patel b5ea255fb4 Fix an off by one error while accessing complex address element of a DIVariable.
This worked untill now because stars are aligned (i.e. num of complex address elments are always 0 or 2+ and when it is 2+ at least two elements are access together)

llvm-svn: 130225
2011-04-26 18:24:39 +00:00
Fariborz Jahanian 6b4e26bee2 Add ms_struct attribute on record typee
(and ignore it for now) - wip.

llvm-svn: 130224
2011-04-26 17:54:40 +00:00
Argyrios Kyrtzidis a9b630e4d7 Emit a -Wnull-dereference warning for "*null" not just "*null = something". Addresses rdar://9269271.
llvm-svn: 130207
2011-04-26 17:41:22 +00:00
Chris Lattner eb045f9c02 Improve the bail-out predicate to really only kick in when phi
translation fails.  We were bailing out in some cases that would
cause us to miss GVN'ing some non-local cases away.

llvm-svn: 130206
2011-04-26 17:41:02 +00:00
Dan Gohman 7da91aee83 Fast-isel support for simple inline asms.
llvm-svn: 130205
2011-04-26 17:18:34 +00:00
Argyrios Kyrtzidis 21362becdc Disable a test that fails on windows; for some reason we don't detect that the header has different timestamp.
llvm-svn: 130204
2011-04-26 16:49:25 +00:00
Oscar Fuentes 638aaecc4d Honor LLVM_BUILD_RUNTIME.
llvm-svn: 130199
2011-04-26 14:55:27 +00:00
Rafael Espindola 580eebaa20 Add test for PR9743.
llvm-svn: 130198
2011-04-26 14:17:42 +00:00
Duncan Sands d4ea3ec87f Another example of a static table that wasn't marked static.
llvm-svn: 130193
2011-04-26 07:30:10 +00:00
Chris Lattner 189ca1498f don't emit the symbol name twice for local bss and common
symbols.  For example, don't emit:
        .comm   _i,4,2                  ## @i
                                        ## @i

instead emit:
        .comm   _i,4,2                  ## @i

llvm-svn: 130192
2011-04-26 06:14:13 +00:00
Nick Lewycky 68d2218978 Add cmakefiles to build profile_rt.so!
llvm-svn: 130191
2011-04-26 05:48:41 +00:00
Evan Cheng 2f64754031 Fix typo
llvm-svn: 130190
2011-04-26 04:57:37 +00:00
Greg Clayton 2ed751bd47 Changed the emulate instruction function to take emulate options which
are defined as enumerations. Current bits include:

        eEmulateInstructionOptionAutoAdvancePC
        eEmulateInstructionOptionIgnoreConditions

Modified the EmulateInstruction class to have a few more pure virtuals that
can help clients understand how many instructions the emulator can handle:

        virtual bool
        SupportsEmulatingIntructionsOfType (InstructionType inst_type) = 0;


Where instruction types are defined as:

//------------------------------------------------------------------
/// Instruction types
//------------------------------------------------------------------    
typedef enum InstructionType
{
    eInstructionTypeAny,                // Support for any instructions at all (at least one)
    eInstructionTypePrologueEpilogue,   // All prologue and epilogue instructons that push and pop register values and modify sp/fp
    eInstructionTypePCModifying,        // Any instruction that modifies the program counter/instruction pointer
    eInstructionTypeAll                 // All instructions of any kind

}  InstructionType;


This allows use to tell what an emulator can do and also allows us to request
these abilities when we are finding the plug-in interface.

Added the ability for an EmulateInstruction class to get the register names
for any registers that are part of the emulation. This helps with being able
to dump and log effectively.

The UnwindAssembly class now stores the architecture it was created with in
case it is needed later in the unwinding process.

Added a function that can tell us DWARF register names for ARM that goes
along with the source/Utility/ARM_DWARF_Registers.h file: 

        source/Utility/ARM_DWARF_Registers.c
        
Took some of plug-ins out of the lldb_private namespace.

llvm-svn: 130189
2011-04-26 04:39:08 +00:00
Rafael Espindola 80cb3cb1d6 Print all the moves at a given label instead of just the first one.
Remove previous DwarfCFI hack.

llvm-svn: 130187
2011-04-26 03:58:56 +00:00
Nick Lewycky c58d293a6f Rename everything to follow LLVM style ... I think.
Add support for switch and indirectbr edges. This works by densely numbering
all blocks which have such terminators, and then separately numbering the
possible successors. The predecessors write down a number, the successor knows
its own number (as a ConstantInt) and sends that and the pointer to the number
the predecessor wrote down to the runtime, who looks up the counter in a
per-function table.

Coverage data should now be functional, but I haven't tested it on anything
other than my 2-file synthetic test program for coverage.

llvm-svn: 130186
2011-04-26 03:54:16 +00:00
NAKAMURA Takumi 72516899db include/clang/AST/StmtIterator.h: std::pair should be provided by <utility>. libcxx needs it.
llvm-svn: 130183
2011-04-26 03:17:13 +00:00
Rafael Espindola 3584ab6cc6 No relocation produces a SLEB or ULEB, make sure they are handled in MC.
llvm-svn: 130181
2011-04-26 02:17:58 +00:00
Chris Lattner 6f83d06ffa Enhance MemDep: When alias analysis returns a partial alias result,
return it as a clobber.  This allows GVN to do smart things.

Enhance GVN to be smart about the case when a small load is clobbered
by a larger overlapping load.  In this case, forward the value.  This
allows us to compile stuff like this:

int test(void *P) {
  int tmp = *(unsigned int*)P;
  return tmp+*((unsigned char*)P+1);
}

into:

_test:                                  ## @test
	movl	(%rdi), %ecx
	movzbl	%ch, %eax
	addl	%ecx, %eax
	ret

which has one load.  We already handled the case where the smaller
load was from a must-aliased base pointer.

llvm-svn: 130180
2011-04-26 01:21:15 +00:00
Eric Christopher 6f095d613a Temporarily revert r130176, it appears to have broken a few tests.
llvm-svn: 130179
2011-04-26 01:02:04 +00:00
Devang Patel cae2fbd6fc Let dwarf writer allocate extra space in the debug location expression. This space, if requested, will be used for complex addresses of the Blocks' variables.
llvm-svn: 130178
2011-04-26 00:12:46 +00:00
Devang Patel 420c8de92e Emit intrinsic at current insert point, not at the end of current block.
llvm-svn: 130177
2011-04-25 23:52:27 +00:00
Stuart Hastings 83da03c2ab Turn on byval parameters in Clang for ARM APCS. rdar://problem/7662569
llvm-svn: 130176
2011-04-25 23:48:12 +00:00
Devang Patel 4f325d1f0f Simplify. There is no need to have a method to just call another method.
llvm-svn: 130175
2011-04-25 23:43:36 +00:00
Johnny Chen d0fef81e38 For lldbutil.py, Change a bunch of function names to all lower case formats to be consistent.
And modify the test cases accordingly.

llvm-svn: 130174
2011-04-25 23:38:13 +00:00
Fariborz Jahanian 24ac1599fc Generalize case for built-in expressions having
side-effect to generate their ir. Not just for
__builtin_expect. // rdar://9330105

llvm-svn: 130172
2011-04-25 23:10:07 +00:00
Devang Patel 2606f4d6d2 Rename a local variable.
llvm-svn: 130171
2011-04-25 23:05:21 +00:00
Devang Patel 8ce24133fd Rename a method to match what it really does.
s/addVariableAddress/addFrameVariableAddress/g

llvm-svn: 130170
2011-04-25 23:02:17 +00:00
Argyrios Kyrtzidis e1b97c40c5 For the warnings related to -Wparentheses, display first the note about how to silence the warning and
any other suggestion after that. Related to rdar://9300260.

llvm-svn: 130169
2011-04-25 23:01:29 +00:00
Ted Kremenek 4f76f4ae31 Re-enable disable free optimization where the FrontendAction is not freed when -disable-free is passed. This accidentally was commited in r128011.
llvm-svn: 130168
2011-04-25 22:57:55 +00:00
Devang Patel 2688e4aba6 Do not drop a variable's complex address if it is not based on frame base.
Observed this while reading code, so I do not have a test case handy here.

llvm-svn: 130167
2011-04-25 22:52:55 +00:00
Dan Gohman 6acd95b3c1 Fix an iterator invalidation bug.
llvm-svn: 130166
2011-04-25 22:48:29 +00:00
Eric Christopher 238a21f2d5 Make this test disable fast isel as it's not needed.
llvm-svn: 130165
2011-04-25 22:39:46 +00:00