llvm-svn: 54765

non-constant indices. Only a few of the peephole checks require
a constant index.

llvm-svn: 54764

Make the allocation of LiveIntervals explicit, rather than holding them in the r2iMap_ by value.  This will prevent references to them from being invalidated
if the map is changed.

llvm-svn: 54763

the comments in FastISelEmitter.cpp for details on what this is.
This is currently experimental and unusable.

llvm-svn: 54751

room for the new FastISel instruction selection code.

llvm-svn: 54749

llvm-svn: 54742

2) Conditionalize temporary insertion if we don't need it.

llvm-svn: 54741

llvm-svn: 54688

of stack objects. This fixes PR2656.

llvm-svn: 54646

llvm-svn: 54574

names. This can save a lot of allocations if you aren't going to be
looking at the output.

llvm-svn: 54546

llvm-svn: 54540

Reduce the entries in a phi before testing it for deadness, because removing the entries might make it dead.

llvm-svn: 54535

llvm-svn: 54522

is narrower than the pointer. This testcase emits:

  .byte (((17) - 16) & 255)

llvm-svn: 54517

FPROUND_F80_F32, FPROUND_PPCF128_F32, 
FPROUND_F80_F64, FPROUND_PPCF128_F64

Support for soften float fp_round operands is added, Mips 
needs this to round f64->f32.

Also added support to soften float FABS result, Mips doesn't 
support double fabs results while in 'single float only' mode.

llvm-svn: 54484

Do a dominator walk when scheduling copies, rather than a DFS on the CFG.  Also, fix a few problems when creating
live intervals for temporaries created by phi elimination.

llvm-svn: 54483

LowerSubregs, and fix an x86-64 isel bug that this exposed.

SUBREG_TO_REG for x86-64 implicit zero extension is only safe for
isel to generate when the source is known to always have zeros in
the high 32 bits. The EXTRACT_SUBREG instruction does not clear
the high 32 bits.

llvm-svn: 54444

Factor code that finalize PHI nodes, jump tables, etc. out of SelectBasicBlock. No functionality changes.

llvm-svn: 54438

SDISel's constant branch folding can fold away self-loops, which doesn't result in any dead blocks, but
rather an incorrect phi input.  Add code to UnreachableMachineBlockElim to get rid of these entries.

llvm-svn: 54432

Correct handle cases where two phis are coalesced together, and correct break up the case where two different
phis want to coalesce with the same vreg.

llvm-svn: 54426

llvm-svn: 54425

llvm-svn: 54422

llvm-svn: 54421

llvm-svn: 54420

llvm-svn: 54378

llvm-svn: 54375

llvm-svn: 54374

llvm-svn: 54371

llvm-svn: 54369

llvm-svn: 54361

llvm-svn: 54349

llvm-svn: 54347

Fix PR2568: Fix bug that cause redudant kill marker after its live interval has been extended due to coalescing.

llvm-svn: 54346

llvm-svn: 54337

llvm-svn: 54336

- Add a basic machine-level dead block eliminator.

These two have to go together, since many other parts of the code generator are unable to handle the unreachable blocks otherwise created.

llvm-svn: 54333

This allows it to work correctly on aggregate values.
This fixes PR2623.

llvm-svn: 54331

This allows it to work correctly on nested aggregate values.
This fixes PR2625.

llvm-svn: 54330

switches use the binary search algorithm) for
environments that don't support it.  PPC64 JIT
is such an environment; turn the flag on for that.

llvm-svn: 54248