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

llvm-svn: 54535

llvm-svn: 54534

up the passmgr by avoiding useless work.

llvm-svn: 54528

llvm-svn: 54523

llvm-svn: 54522

It's not legal to output a GV in a coalesced section if it's used in an ARM PIC relative constantpool.

llvm-svn: 54519

llvm-svn: 54518

is narrower than the pointer. This testcase emits:

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

llvm-svn: 54517

llvm-svn: 54516

llvm-svn: 54515

llvm-svn: 54514

Fixed bug in adjustMipsStackFrame, which was breaking
while trying to access a dead stack object index. Also added
one more alignment before fixing the callee saved registers
stack offset adjustment.

llvm-svn: 54485

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

postfixing it with a number.

llvm-svn: 54468

r53941 (but this was not noticed due to the lack of a basic test for
SRETPromotion). 

llvm-svn: 54467

llvm-svn: 54464

llvm-svn: 54461

llvm-svn: 54460

llvm-svn: 54459

llvm-svn: 54458

llvm-svn: 54457

llvm-svn: 54456

llvm-svn: 54455

llvm-svn: 54454

llvm-svn: 54453

llvm-svn: 54452

llvm-svn: 54451

llvm-svn: 54450

llvm-svn: 54449

llvm-svn: 54448

llvm-svn: 54446

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

are allocated in the same buffer as the code,
jump tables, etc.

The default JIT memory manager does not handle buffer
overflow well.  I didn't introduce this and I'm not
attempting to fix it here, but it is more likely to
be hit now since we're putting more stuff in the
buffer.  This affects one test that I know of so far,
MultiSource/Benchmarks/NPB-serial/is.

llvm-svn: 54442

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