llvm-svn: 131430

llvm-svn: 131429

llvm-svn: 131428

misses.

llvm-svn: 131426

Radar 9422775.

llvm-svn: 131422

llvm-svn: 131420

llvm-svn: 131419

Basic fast-isel of extractvalue.  Not too helpful on its own, given the IR clang generates for cases like this, but it should become more useful soon.

llvm-svn: 131417

corrupted when setjmp returns again.

llvm-svn: 131399

Fix a FIXME by moving the fast-isel implementation of the objectsize intrinsic from the x86 code to the generic code.

llvm-svn: 131332

to fix PR9900. I will keep it open until sable is able to comment on it.

llvm-svn: 131294

simplified version.  <rdar://problem/9298790>

llvm-svn: 131274

rdar://problem/9298790

llvm-svn: 131269

by non-CMP expressions.  The executable test case (129821) would test
this as well, if we had an "-O0 -disable-arm-fast-isel" LLVM-GCC
tester.  Alas, the ARM assembly would be very difficult to check with
FileCheck.

The thumb2-cbnz.ll test is affected; it generates larger code (tst.w
vs. cmp #0), but I believe the new version is correct.
rdar://problem/9298790

llvm-svn: 131261

llvm-svn: 131258

s/DW_AT_APPLE_objc_class_extension/DW_AT_APPLE_objc_complete_type/g

llvm-svn: 131244

Re-enable branchfolding common code hoisting optimization. Fixed a liveness test bug and also taught it to update liveins.

llvm-svn: 131241

Let Objective-C front-end identify class extension, in dwarf output, using an attribute DW_AT_APPLE_objc_class_extension.

llvm-svn: 131238

llvm-svn: 131235

markers. In some cases a register def is dead on one path, but not on
another.

This is passing Clang self-hosting.

llvm-svn: 131214

Identify end of prologue (and beginning of function body) using DW_LNS_set_prologue_end line table opcode.

llvm-svn: 131194

about to be spilled.

This can only happen when two extra snippet registers are included in the spill,
and there is a copy between them. Hoisting the spill creates problems because
the hoist will mark the copy for later dead code elimination, and spilling the
second register will turn the copy into a spill.

<rdar://problem/9420853>

llvm-svn: 131192

Fixes a bug in the DAGCombiner.  LoadSDNodes have two values (data, chain).
If there is a store after the load node, then there is a chain, which means
that there is another user. Thus, asking hasOneUser would fail. Instead we
ask hasNUsesOfValue on the 'data' value.

llvm-svn: 131183

to provide a reduced testcase.

llvm-svn: 131176

intrinsic call. This prevents it from being reordered so that it appears
*before* the setjmp intrinsic (thus making it completely useless).
<rdar://problem/9409683>

llvm-svn: 131174

at the start of basic blocks to their common predecessor. It's actually quite
common (e.g. about 50 times in JM/lencod) and has shown to be a nice code size
benefit. e.g.

        pushq   %rax
        testl   %edi, %edi
        jne     LBB0_2
## BB#1:
        xorb    %al, %al
        popq    %rdx
        ret
LBB0_2:
        xorb    %al, %al
        callq   _foo
        popq    %rdx
        ret

=>

        pushq   %rax
        xorb    %al, %al
        testl   %edi, %edi
        je      LBB0_2
## BB#1:
        callq   _foo
LBB0_2:
        popq    %rdx
        ret

rdar://9145558

llvm-svn: 131172

llvm-svn: 131157

llvm-svn: 131156

test case; I've only seen this on a release branch, and I can't get it
to reproduce on trunk.  rdar://problem/7662569

llvm-svn: 131152

llvm-svn: 131151

DwarfRequiresRelocationForSectionOffset as this is not specific to StmtList.

llvm-svn: 131148

this clang will use .debug_frame in, for example,
clang -g -c -m32 test.c
This matches gcc's behaviour. It looks like .debug_frame is a bit bigger
than .eh_frame, but has the big advantage of not being allocated.

llvm-svn: 131140

The previous invalidation missed the alias interference caches.

Also add a stats counter for the number of repaired ranges.

llvm-svn: 131133

llvm-svn: 131106

Patch by Evan Cheng.

llvm-svn: 131093

llvm-svn: 131082

It can happen that a live debug variable is the last use of a sub-register, and
the register allocator will pick a larger register class for the virtual
register.  If the allocated register doesn't support the sub-register index,
just use %noreg for the debug variables instead of asserting.

In PR9872, a debug variable ends up in the sub_8bit_hi part of a GR32_ABCD
register. The register is split and one part is inflated to GR32 and assigned
%ESI because there are no more normal uses of sub_8bit_hi.

Since %ESI doesn't have that sub-register, substPhysReg asserted. Now it will
simply insert a %noreg instead, and the debug variable will be marked
unavailable in that range.

We don't currently have a way of saying: !"value" is in bits 8-15 of %ESI, I
don't know if DWARF even supports that.

llvm-svn: 131073

This can't be just an assertion, users can always write impossible inline
assembly. Such an assembly statement should be included in the error message.

llvm-svn: 131024

llvm-svn: 131022

llvm-svn: 131015