llvm-svn: 61275

* Now Bind() methods take and return GRState* because binding could
  also alter GDM.
* No variables are initialized except those declared with initial
  values.
* failed C test cases are due to bugs in RemoveDeadBindings(),
which removes constraints that is still alive. This will be fixed in later
patch.
* default value of array and struct regions will be implemented in later patch.

llvm-svn: 61274

llvm-svn: 61273

Fix <rdar://problem/6454568>: BugReporter should correctly handle switch statements with no default case.

llvm-svn: 61270

llvm-svn: 61269

@encode of classes and bitfields.

llvm-svn: 61268

llvm-svn: 61265

llvm-svn: 61264

warnings on compilers that warn about such things.

llvm-svn: 61263

llvm-svn: 61260

Fix PR3149. If an early clobber def is a physical register and it is tied to an input operand, it effectively extends the live range of the physical register. Currently we do not have a good way to represent this.

172     %ECX<def> = MOV32rr %reg1039<kill>
180     INLINEASM <es:subl $5,$1
        sbbl $3,$0>, 10, %EAX<def>, 14, %ECX<earlyclobber,def>, 9, %EAX<kill>,
36, <fi#0>, 1, %reg0, 0, 9, %ECX<kill>, 36, <fi#1>, 1, %reg0, 0
188     %EAX<def> = MOV32rr %EAX<kill>
196     %ECX<def> = MOV32rr %ECX<kill>
204     %ECX<def> = MOV32rr %ECX<kill>
212     %EAX<def> = MOV32rr %EAX<kill>
220     %EAX<def> = MOV32rr %EAX
228     %reg1039<def> = MOV32rr %ECX<kill>

The early clobber operand ties ECX input to the ECX def.

The live interval of ECX is represented as this:
%reg20,inf = [46,47:1)[174,230:0)  0@174-(230) 1@46-(47)

The right way to represent this is something like
%reg20,inf = [46,47:2)[174,182:1)[181:230:0)  0@174-(182) 1@181-230 @2@46-(47)

Of course that won't work since that means overlapping live ranges defined by two val#.

The workaround for now is to add a bit to val# which says the val# is redefined by a early clobber def somewhere. This prevents the move at 228 from being optimized away by SimpleRegisterCoalescing::AdjustCopiesBackFrom.

llvm-svn: 61259

llvm-svn: 61258

version number assertions.

llvm-svn: 61257

llvm-svn: 61256

llvm-svn: 61255

llvm-svn: 61254

llvm-svn: 61253

This operation can be used to build dyn_cast, isa, and cast.

llvm-svn: 61252

Patch by Lukasz Janyst!

llvm-svn: 61251

that have i32 immediates so that they get selected first. This
currently only matters in the JIT, as assemblers will
automatically use the smallest encoding.

llvm-svn: 61250

reduces the amount of code slightly when assertions are enabled.

llvm-svn: 61249

- CodeGenPrepare does not split loop back edges but it only knows about back edges of single block loops. It now does a DFS walk to find loop back edges.
- Use SplitBlockPredecessors to factor out common predecessors of the critical edge destination. This is disabled for now due to some regressions.

llvm-svn: 61248

llvm-svn: 61247

warning. This matches GCC's behavior and addresses
<rdar://problem/6458293>.

llvm-svn: 61246

llvm-svn: 61245

llvm-svn: 61244

The EH_frame and .eh symbols are now private, except for darwin9 and earlier.
The patch also fixes the definition of PrivateGlobalPrefix on pcc linux.

llvm-svn: 61242

llvm-svn: 61241

llvm-svn: 61240

The problematic part of this patch is that we were out of attribute bits,
requiring some fancy bit hacking to make it fit (by shrinking alignment)
without breaking existing users or the file format.

This change will require users to rebuild llvm-gcc to match llvm.

llvm-svn: 61239

llvm-svn: 61238

data from a previous block.

llvm-svn: 61237

one instruction.

llvm-svn: 61236

argument. Nothing was using it, and it set the MBB member without
calling enterBasicBlock, which was problematic.

llvm-svn: 61234

llvm-svn: 61233

llvm-svn: 61231

llvm-svn: 61230

llvm-svn: 61229

of incorrectly generating pmuldq

llvm-svn: 61228

Added test case for suppressing leak warnings for reference-counted objects passed by-reference to an unknown function.

llvm-svn: 61227