Changes related modules so VNInfo's are not copied. This decrease
copy coalescing time by 45% and overall compilation time by 10% on siod.

llvm-svn: 41579

llvm-svn: 41578

in the trampoline lowering.  Lookup the jump and
mov opcodes for the trampoline rather than hard
coding them.

llvm-svn: 41577

llvm-svn: 41576

This is the same functionality gcc provides via --Wfloat-equal.

llvm-svn: 41574

to emit signed comparisons when needed for enum decl references.  This implements
test/CodeGen/enum.c.  I think enums should be good now.

llvm-svn: 41572

A small bit of codegen work is still pending.

llvm-svn: 41571

llvm-svn: 41570

llvm-svn: 41569

llvm-svn: 41568

llvm-svn: 41567

llvm-svn: 41566

llvm-svn: 41565

llvm-svn: 41564

llvm-svn: 41560

This fixes the following bug submitted by Neil...

const char *f (void) { return 0; }

...which would incorrectly warn with -pedantic enabled.

llvm-svn: 41559

Implement default argument promotions (for old-style function calls and variable argument lists).

[dylan:~/llvm/tools/clang] admin% cat x.c

int printf(const char *, ...);

int oldschool();

void foo() {
  float f; 
  short i;
  printf("foo %f", 1.0f);

  oldschool(f,i);
}

[dylan:~/llvm/tools/clang] admin% ../../Debug/bin/clang x.c -parse-ast-dump

int printf(char const *, ...);

int oldschool();

void foo()
(CompoundStmt 0x3105f00
  (DeclStmt 0x3105ba0
    0x3105ce0 "float f")
  (DeclStmt 0x3105c90
    0x3105d10 "short i")
  (CallExpr 0x3105df0 'int'
    (ImplicitCastExpr 0x3105dc0 'int (*)(char const *, ...)'
      (DeclRefExpr 0x3105c20 'int (char const *, ...)' Decl='printf' 0x3105bd0))
    (ImplicitCastExpr 0x3105dd0 'char const *'
      (StringLiteral 0x3105d60 'char *' "foo %f"))
    (ImplicitCastExpr 0x3105de0 'double'
      (FloatingLiteral 0x3105d80 'float' 1.000000)))
  (CallExpr 0x3105ed0 'int'
    (ImplicitCastExpr 0x3105ea0 'int (*)()'
      (DeclRefExpr 0x3105e20 'int ()' Decl='oldschool' 0x3105c40))
    (ImplicitCastExpr 0x3105eb0 'double'
      (DeclRefExpr 0x3105e40 'float' Decl='f' 0x3105ce0))
    (ImplicitCastExpr 0x3105ec0 'int'
      (DeclRefExpr 0x3105e60 'short' Decl='i' 0x3105d10))))

llvm-svn: 41558

This fixes the following (recent) regression noticed by Keith Bauer (thanks!).

void func(void *a);

main() {
  void *p;
  p = 0;
  func(0);
}

...which now works as you would expect.

llvm-svn: 41557

scheduling.

llvm-svn: 41556

Finish converting decls over to the new invalid decl API.

Also removed an old FIXME (FIXME: "auto func();" passes through...).

llvm-svn: 41555

This involves the construction of a specialized "dispatch" block that
all basic blocks containing indirect gotos unconditionally transfer
control-flow to.  The successors of the dispatch block has as its successors
all of the blocks containing labels whose address was taken somewhere in
the function.

llvm-svn: 41554

llvm-svn: 41553

Move the "invalid decl" idiom up to Decl (where we have some bits to steal:-)

Converted ParmVarDecl, FileVarDecl, BlockVarDecl, and Sema::ParseIdentifierExpr() to use the idiom.

Updated array-constraint.c to make sure we no longer get "undeclared identifier" errors:-)

llvm-svn: 41552

t2.c:3:18: warning: expression result unused
     x = ++x, ++y, y+2;
     ~~~~~~~~~~~~^ ~~~

llvm-svn: 41551

llvm-svn: 41550

llvm-svn: 41549

directly in it.  Remove TargetInfo::getEnumPolicy, as there is only
one policy that we support right now.

llvm-svn: 41548

arbitrarily complex control-flow in their subexpressions.

llvm-svn: 41547

variables that have a pointer type, or arrays that contain pointers.

This fixes a crash on the following code:

int *h[3];

int **foo(int i)
{
   return &(h[i]);
}

This bug was reported by Keith Bauer (thanks!).

llvm-svn: 41546

llvm-svn: 41545

llvm-svn: 41544

llvm-svn: 41543

llvm-svn: 41542

llvm-svn: 41541

llvm-svn: 41540

1. Eliminate the costly live interval "swapping".
2. Change ValueNumberInfo container from SmallVector to std::vector. The former
   performs slowly when the vector size is very large.

llvm-svn: 41536

llvm-svn: 41533

TODO: update the types of the constants and the enum.
llvm-svn: 41532

llvm-svn: 41531

t.c:1:12: warning: ISO C restricts enumerator values to range of 'int' (180388626432 is too large)
enum e {A, B = 42LL << 32, C = -4, D = 12456 };
           ^

llvm-svn: 41530