Handle explicit 'ia' suffix via a MnemonicAlias (pre-existing).

llvm-svn: 139234

(not assert) early.

llvm-svn: 139233

llvm-svn: 139232

Relax the MemOperands on atomics a bit.  Fixes -verify-machineinstrs failures for atomic laod/store on ARM.

(The fix for the related failures on x86 is going to be nastier because we actually need Acquire memoperands attached to the atomic load instrs, etc.)

llvm-svn: 139221

While sinking machine instructions, sink matching DBG_VALUEs also otherwise live debug variable pass will drop DBG_VALUEs on the floor.

llvm-svn: 139208

information for older linkers.

llvm-svn: 139206

llvm-svn: 139205

Fixes PR10872 and <rdar://problem/10065079>.

llvm-svn: 139204

llvm-svn: 139202

llvm-svn: 139200

llvm-svn: 139193

llvm-svn: 139191

llvm-svn: 139188

handle anything more complex. Fixes PR10383 again!

llvm-svn: 139186

llvm-svn: 139179

llvm-svn: 139172

llvm-svn: 139169

llvm-svn: 139161

with a vector condition); such selects become VSELECT codegen nodes.
This patch also removes VSETCC codegen nodes, unifying them with SETCC
nodes (codegen was actually often using SETCC for vector SETCC already).
This ensures that various DAG combiner optimizations kick in for vector
comparisons.  Passes dragonegg bootstrap with no testsuite regressions
(nightly testsuite as well as "make check-all").  Patch mostly by
Nadav Rotem.

llvm-svn: 139159

Now the 'S' instructions, e.g. ADDS, treat S bit as optional operand as well.
Also fix isel hook to correctly set the optional operand.
rdar://10073745

llvm-svn: 139157

llvm-svn: 139156

Even if there's no mode switch performed, the .code directive should still
be sent to the output streamer. Otherwise, for example, an output asm stream
is not equivalent to the input stream which generated it (a dependency on
the input target triple arm vs. thumb is introduced which was not originally
there).

llvm-svn: 139155

llvm-svn: 139154

llvm-svn: 139152

Try again at r138809 (make DSE more aggressive in removing dead stores at the end of a function), now with less deleting stores before memcpy's.

llvm-svn: 139150

llvm-svn: 139148

Now, named mdnode llvm.dbg.cu keeps track of all compile units in a module. Update DebugInfoFinder to collect compile units from llvm.dbg.cu.

llvm-svn: 139147

init.trampoline and adjust.trampoline intrinsics, into two intrinsics
like in GCC.  While having one combined intrinsic is tempting, it is
not natural because typically the trampoline initialization needs to
be done in one function, and the result of adjust trampoline is needed
in a different (nested) function.  To get around this llvm-gcc hacks the
nested function lowering code to insert an additional parent variable
holding the adjust.trampoline result that can be accessed from the child
function.  Dragonegg doesn't have the luxury of tweaking GCC code, so it
stored the result of adjust.trampoline in the memory GCC set aside for
the trampoline itself (this is always available in the child function),
and set up some new memory (using an alloca) to hold the trampoline.
Unfortunately this breaks Go which allocates trampoline memory on the
heap and wants to use it even after the parent has exited (!).  Rather
than doing even more hacks to get Go working, it seemed best to just use
two intrinsics like in GCC.  Patch mostly by Sanjoy Das.

llvm-svn: 139140

llvm-svn: 139139

llvm-svn: 139138

llvm-svn: 139137

add more showing of my work.

llvm-svn: 139136

llvm-svn: 139135

llvm-svn: 139134

visible given a=b=c=d=1, on iteration #1 (the second iteration). Replace it with
correct math. Fixes PR10383!

llvm-svn: 139133

llvm-svn: 139130

HowFarToZero; the case for a canonical loop.

llvm-svn: 139126

instructions are more aligned than the CPU requires, and adds some additional
directives, to follow in future patches. Patch by David Meyer!

llvm-svn: 139125

llvm-svn: 139124

llvm-svn: 139122