Commit Graph

101629 Commits

Author SHA1 Message Date
Chris Lattner 0725a8b653 First tiny step to implementing PR9322: build infrastructure for only emitting the
live case of a switch statement when switching on a constant.  This is terribly
limited, but enough to handle the trivial example included.  Before we would 
emit:

define void @test1(i32 %i) nounwind {
entry:
  %i.addr = alloca i32, align 4
  store i32 %i, i32* %i.addr, align 4
  switch i32 1, label %sw.epilog [
    i32 1, label %sw.bb
  ]

sw.bb:                                            ; preds = %entry
  %tmp = load i32* %i.addr, align 4
  %inc = add nsw i32 %tmp, 1
  store i32 %inc, i32* %i.addr, align 4
  br label %sw.epilog

sw.epilog:                                        ; preds = %sw.bb, %entry
  switch i32 0, label %sw.epilog3 [
    i32 1, label %sw.bb1
  ]

sw.bb1:                                           ; preds = %sw.epilog
  %tmp2 = load i32* %i.addr, align 4
  %add = add nsw i32 %tmp2, 2
  store i32 %add, i32* %i.addr, align 4
  br label %sw.epilog3

sw.epilog3:                                       ; preds = %sw.bb1, %sw.epilog
  ret void
}

now we emit:

define void @test1(i32 %i) nounwind {
entry:
  %i.addr = alloca i32, align 4
  store i32 %i, i32* %i.addr, align 4
  %tmp = load i32* %i.addr, align 4
  %inc = add nsw i32 %tmp, 1
  store i32 %inc, i32* %i.addr, align 4
  ret void
}

This improves -O0 compile time (less IR to generate and shove through the code 
generator) and the clever linux kernel people found a way to fail to build if we 
don't do this optimization.  This step isn't enough to handle the kernel case
though.

llvm-svn: 126597
2011-02-28 00:22:07 +00:00
Chris Lattner 29911cc2f5 Add some helper methods that will be used in my next patch.
llvm-svn: 126596
2011-02-28 00:18:40 +00:00
Chris Lattner 80d51eb03a tidy up
llvm-svn: 126595
2011-02-28 00:18:06 +00:00
Chris Lattner 589b989713 add a const version of this accessor.
llvm-svn: 126594
2011-02-28 00:17:41 +00:00
Douglas Gregor 6e068014f0 When we encounter a dependent template name within a
nested-name-specifier, e.g., 

  T::template apply<U>::

represent the dependent template name specialization as a
DependentTemplateSpecializationType, rather than a
TemplateSpecializationType with a dependent TemplateName.

llvm-svn: 126593
2011-02-28 00:04:36 +00:00
Chris Lattner 41c6ab538a Change the interface to ConstantFoldsToSimpleInteger to not encode
a bool + success into one tri-state integer, simplifying things.

llvm-svn: 126592
2011-02-27 23:02:32 +00:00
Chris Lattner 2ca62f910d add the ability to walk the scope tree and insert at not-the-current
scope.

llvm-svn: 126591
2011-02-27 22:51:57 +00:00
Chris Lattner 67b5d71eb2 add a data() method.
llvm-svn: 126590
2011-02-27 22:51:37 +00:00
Douglas Gregor b09518c551 Eliminate a silly little Parse/Sema dance when parsing typename
specifiers such as

  typename T::template apply<U>

Previously, we would turn T::template apply<U> into a
TemplateSpecializationType. Then, we'd reprocess that
TemplateSpecializationType and turn it into either a
TemplateSpecializationType wrapped in an ElaboratedType (when we could
resolve "apply" to a template declaration) or a
DependentTemplateSpecializationType. We now produce the same ASTs but
without generating the intermediate TemplateSpecializationType.

The end goal here is to avoid generating TemplateSpecializationTypes
with dependent template-names, ever. We're not there yet.

llvm-svn: 126589
2011-02-27 22:46:49 +00:00
Howard Hinnant 99847d2bf1 Fix copy_n to increment only n-1 times for an input iterator. This works much better with std::istream_iterator<int>(std::cin). Credit: Matan Nassau.
llvm-svn: 126581
2011-02-27 20:55:39 +00:00
Rafael Espindola 7e5fe6ce1c Gold now rescans archives as needed, so the pass-through options are not
necessary anymore.

llvm-svn: 126580
2011-02-27 20:30:22 +00:00
Rafael Espindola 92c06ba158 bfd was fixed, remove the work around.
llvm-svn: 126579
2011-02-27 20:15:37 +00:00
Benjamin Kramer 25bddae404 Silence enum conversion warnings.
llvm-svn: 126578
2011-02-27 18:13:53 +00:00
Benjamin Kramer 6e152156d5 Fix an obvious typo.
GCC -Waddress warns about this but clang doesn't (PR9043).

llvm-svn: 126577
2011-02-27 18:07:41 +00:00
Howard Hinnant 73736effce Fixed two problems found by Chris Jefferson: Made operator>> for char consistent with gcc. Opened an LWG issue on this one. 2) Renamed some private typedefs which are causing boost grief.
llvm-svn: 126576
2011-02-27 18:02:02 +00:00
Duncan Sands f571290d1e Legalize support for fpextend of vector. PR9309.
llvm-svn: 126574
2011-02-27 14:41:27 +00:00
Duncan Sands 508fe2f2c4 Fix typo pointed out in pr9339.
llvm-svn: 126573
2011-02-27 13:54:01 +00:00
Oscar Fuentes 6401523405 CMake: updated list of installable header files. PR9321.
llvm-svn: 126572
2011-02-27 13:33:31 +00:00
Oscar Fuentes ed9fab68a9 Install include/llvm/Support/LICENSE.TXT. PR9321.
llvm-svn: 126571
2011-02-27 13:32:50 +00:00
NAKAMURA Takumi d4e5003a3f Target/X86: Always emit "push/pop GPRs" in prologue/epilogue and emit "spill/reload frames" for XMMs.
It improves Win64's prologue/epilogue but it would not affect ia32 and amd64 (lack of nonvolatile XMMs).

llvm-svn: 126568
2011-02-27 08:47:19 +00:00
Cameron Zwarich 68f677a612 Fix PR9324 / <rdar://problem/9052489> by handling the case where a PHI has no uses.
llvm-svn: 126567
2011-02-27 08:06:01 +00:00
Cameron Zwarich baeb5f1431 Give a test file a more sensible name so that it can hold more test cases.
llvm-svn: 126566
2011-02-27 08:05:57 +00:00
Nadav Rotem b00913028f Fix typos in the comments.
llvm-svn: 126565
2011-02-27 07:40:43 +00:00
Tobias Grosser 98eecaf0a9 RegionPrinter: Ignore back edges when layouting the graph
llvm-svn: 126564
2011-02-27 04:11:07 +00:00
Tobias Grosser 1b4f94070f cmake: Add xdot.py support as it already exists in autoconf.
llvm-svn: 126563
2011-02-27 04:11:05 +00:00
Tobias Grosser 3ac8689fa3 Pass the graph to the DOTGraphTraits.getEdgeAttributes().
This follows the interface of getNodeAttributes.

llvm-svn: 126562
2011-02-27 04:11:03 +00:00
Frits van Bommel ba6ce03e46 Fix this test case for CMake builds after r126502, which sneakily changed the actual executable name to clang-<version>.
llvm-svn: 126560
2011-02-27 01:17:12 +00:00
Daniel Dunbar 160fc36896 cc1: Fix stats printing by default when using -mllvm -stats.
llvm-svn: 126559
2011-02-26 23:17:25 +00:00
Daniel Dunbar 06dfe8e9c5 Support: Add llvm::AreStatisticsEnabled().
llvm-svn: 126558
2011-02-26 23:17:12 +00:00
Benjamin Kramer 26691d9660 Add some DAGCombines for (adde 0, 0, glue), which are useful to optimize legalized code for large integer arithmetic.
1. Inform users of ADDEs with two 0 operands that it never sets carry
2. Fold other ADDs or ADDCs into the ADDE if possible

It would be neat if we could do the same thing for SETCC+ADD eventually, but we can't do that in target independent code.

llvm-svn: 126557
2011-02-26 22:48:07 +00:00
Alexis Hunt c5575cced8 Implement delegating constructors partially.
This successfully performs constructor lookup and verifies that a
delegating initializer is the only initializer present.

This does not perform loop detection in the initialization, but it also
doesn't codegen delegating constructors at all, so this won't cause
runtime infinite loops yet.

llvm-svn: 126552
2011-02-26 19:13:13 +00:00
Rafael Espindola 908d391bd2 LTO uses MC now.
llvm-svn: 126546
2011-02-26 16:44:13 +00:00
John McCall c57994467b Don't assume that whoever is asking for a message send is going
to give us a non-null return slot.

llvm-svn: 126544
2011-02-26 09:48:59 +00:00
John McCall 71309be80a Zero-initialize the struct-return slot of an Objective-C message
send before making the call.  Fixes rdar://problem/7854674

llvm-svn: 126543
2011-02-26 09:12:15 +00:00
John McCall 8a3c55567e A much-delayed response to Ken Dyck's review: make this somewhat more
char-width agnostic.

llvm-svn: 126542
2011-02-26 08:41:59 +00:00
John McCall 4b13633082 Don't crash during constant-evaluation of 1/(1/0). PR9262.
llvm-svn: 126541
2011-02-26 08:27:17 +00:00
John McCall 53fcbd2718 Pretty up the emission of field l-values and use volatile and TBAA when
loading references as part of that.  Use 'char' TBAA when accessing
(immediate!) fields of a may_alias struct;  fixes PR9307.

llvm-svn: 126540
2011-02-26 08:07:02 +00:00
John McCall bebede4d33 Provide a bit saying that a builtin undergoes custom type-checking, then
don't let calls to such functions go down the normal type-checking path.
Test this out with __builtin_classify_type and __builtin_constant_p.

llvm-svn: 126539
2011-02-26 05:39:39 +00:00
Bill Wendling 31ca7efa04 A new TableGen feature! (Not turned on just yet.)
InstAlias<{alias}, {aliasee}>;

The InstAlias instruction should be able to go from the MCInst to the
{alias}. All of the information is there to match the MCInst with the
{aliasee}. From there, it's a simple matter to emit the {alias}, with the
correct operands from the {aliasee}.

The code this patch generates can be used by the InstPrinter to automatically
print out the alias without having to write special C++ code to handle the
situation.

This is a WIP, and therefore are several limitations. For instance, it cannot
handle AsmOperands at the moment. It also doesn't know what to do when two
{alias}es match the same {aliasee}. (Currently, it just ignores those two cases
and allows the printInstruction method to handle them.)

llvm-svn: 126538
2011-02-26 03:09:12 +00:00
Johnny Chen 725269a0b4 If the user sets a working directory path using "process launch -w <path>", honor that dir path;
otherwise, use the thing the debugserver is started with.

Fixed rdar://problem/9056462
The process launch flag '-w' for setting the current working directory not working?

llvm-svn: 126537
2011-02-26 01:36:13 +00:00
Fariborz Jahanian 8f4903397d Fix objc rewriting bug casting to qualified objective-c pointetr.
// rdar://9056351

llvm-svn: 126536
2011-02-26 01:31:36 +00:00
Fariborz Jahanian f2890fc93f Fix a rewriter bug involving call to property's
block. // rdar://9055596

llvm-svn: 126535
2011-02-26 00:33:41 +00:00
Bob Wilson d2e7b05d8a Removed unnecessary dylibs from Apple builds, with or without "lib" prefix.
Radar 9056686

llvm-svn: 126534
2011-02-26 00:22:17 +00:00
Bob Wilson 15c6f99b02 Add a new "Embedded" makefile target for Apple-style builds.
This one just installs the default build into a different destination directory.

llvm-svn: 126533
2011-02-25 23:42:03 +00:00
Johnny Chen 4899420f17 Simplify the dictionary setting for test_set_working_dir_* methods.
llvm-svn: 126531
2011-02-25 23:24:25 +00:00
Johnny Chen d08df5b016 Call self.setTearDownCleanup() and pass a proper dictionay to properly cleanup
the intermediate files built with the same dictionary during test execution.

llvm-svn: 126530
2011-02-25 23:22:59 +00:00
Johnny Chen 90eb2cbaee Add a test case to exercise the process launch flag of '-w <path>' which sets the
current working directory when running the inferior.  Radar filed:

    # rdar://problem/9056462
    # The process launch flag '-w' for setting the current working directory not working?

llvm-svn: 126529
2011-02-25 23:15:09 +00:00
Jim Grosbach 416c47019c Trailing whitespace.
llvm-svn: 126526
2011-02-25 22:53:20 +00:00
Stuart Hastings e6f5613bcc Fix bad comment marker.
llvm-svn: 126525
2011-02-25 22:47:58 +00:00
Matt Beaumont-Gay 531c079de8 ASTStmtReader is already a friend of DependentScopeDeclRefExpr, and GCC
doesn't like re-friending.

llvm-svn: 126524
2011-02-25 22:36:42 +00:00