llvm-svn: 31309

llvm-svn: 31308

llvm-svn: 31307

Defaulting second arguments of SwitchTo*Section, this should make things
somehow clearer.

llvm-svn: 31306

llvm-svn: 31305

llvm-svn: 31304

llvm-svn: 31303

llvm-svn: 31302

condition.  This fixes miscompilation of Olden/bh and many others.

llvm-svn: 31301

the default is actually true.

llvm-svn: 31300

generated object modules to be debugged with gdb. Hopefully this helps
pre-release debugging.

llvm-svn: 31299

llvm-svn: 31298

llvm-svn: 31297

llvm-svn: 31296

llvm-svn: 31295

llvm-svn: 31294

llvm-svn: 31293

llvm-svn: 31292

llvm-svn: 31291

llvm-svn: 31290

more string-like.

llvm-svn: 31289

llvm-svn: 31288

llvm-svn: 31287

to some other type.

llvm-svn: 31286

I'm about to add.  This is similar to, but necessarily different than, the
STL allocator class.

llvm-svn: 31285

llvm-svn: 31284

llvm-svn: 31283

successors), and make island block movement more general.

This compiles CodeGen/X86/2006-04-27-ISelFoldingBug.ll to:

_loadAndRLEsource_no_exit_2E_1_label_2E_0:
        subl $8, %esp
        movl %esi, 4(%esp)
        movl %ebx, (%esp)
        movl 16(%esp), %eax
        movl 12(%esp), %ecx
LBB1_3: #label.0
        movl _last, %edx
        movl %edx, %esi
        incl %esi
        movl %esi, _last
        movl %ecx, %ebx
        # TRUNCATE movb %bl, %bl
        movl _block, %esi
        movb %bl, 1(%esi,%edx)
        cmpl %eax, _last
        jge LBB1_2      #codeRepl5.exitStub
LBB1_4: #label.0
        cmpl $257, %ecx
        je LBB1_2       #codeRepl5.exitStub
LBB1_1: #label.0.no_exit.1_crit_edge.exitStub
        movl $1, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret
LBB1_2: #codeRepl5.exitStub
        xorl %eax, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret

instead of:

_loadAndRLEsource_no_exit_2E_1_label_2E_0:
        subl $8, %esp
        movl %esi, 4(%esp)
        movl %ebx, (%esp)
        movl 16(%esp), %eax
        movl 12(%esp), %ecx
        jmp LBB1_3      #label.0
LBB1_1: #label.0.no_exit.1_crit_edge.exitStub
        movl $1, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret
LBB1_2: #codeRepl5.exitStub
        xorl %eax, %eax
        movl (%esp), %ebx
        movl 4(%esp), %esi
        addl $8, %esp
        ret
LBB1_3: #label.0
        movl _last, %edx
        movl %edx, %esi
        incl %esi
        movl %esi, _last
        movl %ecx, %ebx
        # TRUNCATE movb %bl, %bl
        movl _block, %esi
        movb %bl, 1(%esi,%edx)
        cmpl %eax, _last
        jge LBB1_2      #codeRepl5.exitStub
LBB1_4: #label.0
        cmpl $257, %ecx
        jne LBB1_1      #label.0.no_exit.1_crit_edge.exitStub
        jmp LBB1_2      #codeRepl5.exitStub

... which is much better layout :)

llvm-svn: 31282

llvm-svn: 31281

llvm-svn: 31280

used by comparisons in the main block.

llvm-svn: 31279

llvm-svn: 31278

llvm-svn: 31277

llvm-svn: 31276

llvm-svn: 31275

edges whose destinations are not phi nodes don't bother us.  Also, share
split edges, since the split edge can't have a phi.  This significantly
reduces the complexity of generated code in some cases.

llvm-svn: 31274

jump tables that are dead.

llvm-svn: 31273

llvm-svn: 31272

llvm-svn: 31271

llvm-svn: 31270