llvm-svn: 102394

llvm-svn: 102380

produces a comment on targets that support it, but
the Dwarf writer is not hooked up yet.

llvm-svn: 102372

llvm-svn: 102368

alignment of globals with a specified alignment, we fix
common variables to obey their alignment.  Add a comment
explaining why this behavior is important.

llvm-svn: 102365

Re-enable 102323 with fix: do not update dbg_value's with incorrect frame indices when the live interval are being re-materialized.

llvm-svn: 102361

llvm-svn: 102359

SSAUpdater.  I'm going to try to refactor this to share most of the code
between them.

llvm-svn: 102353

llvm-svn: 102327

- Move TargetLowering::EmitTargetCodeForFrameDebugValue to TargetInstrInfo and rename it to emitFrameIndexDebugValue.
- Teach spiller to modify DBG_VALUE instructions to reference spill slots.

llvm-svn: 102323

form of DEBUG_VALUE, as it doesn't have reasonable default
behavior for unsupported targets.  Add a new hook instead.
No functional change.

llvm-svn: 102320

xs

llvm-svn: 102316

preferred alignment unless they were common or some other special
case.

llvm-svn: 102300

When a load operand is promoted to an extload, replace other uses with uses of extload result truncated.

llvm-svn: 102236

testcase yet, as the testcase now fails downstream.

llvm-svn: 102228

llvm-svn: 102202

itself too.

llvm-svn: 102176

because 102004 causes codegen to emit invalid assembly on at least
x86_64-unknown-gnu-linux.

llvm-svn: 102155

llvm-svn: 102129

into SelectionDAGBuilder itself.

llvm-svn: 102128

llvm-svn: 102127

and into SelectionDAGBuilder and FastISel.

llvm-svn: 102123

- Some code refactoring.

llvm-svn: 102111

llvm-svn: 102110

FunctionLoweringInfo, as it isn't SelectionDAG-specific. This isn't
completely natural, as PHI node state is not per-function but rather
per-basic-block, however there's currently no other convenient
per-basic-block state to group it with.

llvm-svn: 102109

llvm-svn: 102106

llvm-svn: 102104

llvm-svn: 102102

This actually makes everything slower, but the plan is to have isel add <kill>
flags the way it is already adding <dead> flags. Then LiveVariables can be
removed again.

When ignoring the time spent in LiveVariables, -regalloc=fast is now twice as
fast as -regalloc=local.

llvm-svn: 102034

llvm-svn: 102027

Add command line option to disable debug info printing in .s file. This option does not impact debug info generation and preservation through earlier compile starges.

llvm-svn: 102012

So far this is just a clone of -regalloc=local that has been lobotomized to run
25% faster. It drops the least-recently-used calculations, and is just plain
stupid when it runs out of registers.

The plan is to make this go even faster for -O0 by taking advantage of the short
live intervals in unoptimized code. It should not be necessary to calculate
liveness when most virtual registers are killed 2-3 instructions after they are
born.

llvm-svn: 102006

Identify when a lexical scope is split in to multiple instruction ranges. Emit such ranges using DW_AT_ranges.

llvm-svn: 102004

optimization for non-leaf functions. This will be hooked up to gcc's
-momit-leaf-frame-pointer option. rdar://7886181

llvm-svn: 101984

llvm-svn: 101977

llvm-svn: 101976

SelectionDAG directory and into a new Analysis.cpp file.

llvm-svn: 101975

  extract_subreg / insert_subreg, etc.
- Add support for more aggressive insert_subreg coalescing.

llvm-svn: 101971

llvm-svn: 101964

CodeGen's ComputeMaskedBits was being over-conservative when computing
bits for an ADD.

llvm-svn: 101963