encounter/llvm-project
0
0
Fork 0
mirror of https://github.com/encounter/llvm-project.git synced 2026-03-30 11:27:19 -07:00
Code Issues Packages Projects Releases Wiki Activity
103,164 Commits 42 Branches 155 Tags
96f962fdffab615f196ea6b66ea736ca2c601548
Commit Graph

138 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen 096bd8837f Add LiveIntervals::getLastSplitPoint(). 
A live range cannot be split everywhere in a basic block. A split must go before
the first terminator, and if the variable is live into a landing pad, the split
must happen before the call that can throw.

llvm-svn: 124894
 2011-02-04 19:33:11 +00:00
Jakob Stoklund Olesen ab3d6ecbd2 Try for the third time to teach getFirstTerminator() about debug values. 
This time let's rephrase to trick gcc-4.3 into not miscompiling.

llvm-svn: 123432
 2011-01-14 06:33:45 +00:00
Jakob Stoklund Olesen c38102889f Revert r123419. It still breaks llvm-gcc-i386-linux-selfhost. 
llvm-svn: 123423
 2011-01-14 02:12:54 +00:00
Jakob Stoklund Olesen c0767e029d Try again to teach getFirstTerminator() about debug values. 
Fix some callers to better deal with debug values.

llvm-svn: 123419
 2011-01-14 01:17:53 +00:00
Jakob Stoklund Olesen 4bc5e38960 Teach frame lowering to ignore debug values after the terminators. 
llvm-svn: 123399
 2011-01-13 21:28:52 +00:00
Devang Patel 35f4ae26d6 Speculatively revert r123384 to make llvm-gcc-i386-linux-selfhost buildbot happy. 
llvm-svn: 123389
 2011-01-13 19:27:50 +00:00
Jakob Stoklund Olesen 0e233ae183 Teach MachineBasicBlock::getFirstTerminator to ignore debug values. 
It will still return an iterator that points to the first terminator or end(),
but there may be DBG_VALUE instructions following the first terminator.

llvm-svn: 123384
 2011-01-13 18:41:05 +00:00
Jakob Stoklund Olesen 9472847bcc Add missing space in debug output 
llvm-svn: 123351
 2011-01-13 00:57:35 +00:00
Jakob Stoklund Olesen 1331a15b0c Replace TargetRegisterInfo::printReg with a PrintReg class that also works without a TRI instance. 
Print virtual registers numbered from 0 instead of the arbitrary
FirstVirtualRegister. The first virtual register is printed as %vreg0.
TRI::NoRegister is printed as %noreg.

llvm-svn: 123107
 2011-01-09 03:05:53 +00:00
Jakob Stoklund Olesen ea26319185 Don't try to split weird critical edges that really aren't: 
BB#1: derived from LLVM BB %bb.nph28
    Live Ins: %AL
    Predecessors according to CFG: BB#0
	TEST8rr %reg16384<kill>, %reg16384, %EFLAGS<imp-def>; GR8:%reg16384
	JNE_4 <BB#2>, %EFLAGS<imp-use,kill>
	JMP_4 <BB#2>
    Successors according to CFG: BB#2 BB#2

These double CFG edges only ever occur in bugpoint-generated code, so there is
no need to attempt something clever.

llvm-svn: 117992
 2010-11-02 00:58:37 +00:00
Jakob Stoklund Olesen ef54185724 Add SkipPHIsAndLabels from PHIElimination to MachineBasicBlock. It is needed 
elsewhere.

llvm-svn: 117763
 2010-10-30 01:26:14 +00:00
Jakob Stoklund Olesen b7050233fb Teach MachineBasicBlock::print() to annotate instructions and blocks with 
SlotIndexes when available.

llvm-svn: 117392
 2010-10-26 20:21:46 +00:00
Evan Cheng 63a868457b Properly update MachineDominators when splitting critical edge. 
llvm-svn: 111574
 2010-08-19 23:32:47 +00:00
Evan Cheng 647c559172 Move the decision logic whether it's a good idea to split a critical edge to clients. Also fixed an erroneous check. An edge is only a back edge when the from and to blocks are in the same loop. 
llvm-svn: 111256
 2010-08-17 17:43:50 +00:00
Evan Cheng a6848249ee Fix debug message. 
llvm-svn: 111250
 2010-08-17 17:15:14 +00:00
Evan Cheng f259efde47 PHI elimination should not break back edge. It can cause some significant code placement issues. rdar://8263994 
good:
LBB0_2:
  mov     r2, r0
  . . .
  mov     r1, r2
  bne     LBB0_2

bad:
LBB0_2:
  mov     r2, r0
  . . .
@ BB#3:
  mov     r1, r2
  b       LBB0_2

llvm-svn: 111221
 2010-08-17 01:20:36 +00:00
Dan Gohman 88c547ede9 Add a getFirstNonPHI utility function. 
llvm-svn: 107778
 2010-07-07 14:33:51 +00:00
Dan Gohman 3439629239 Reapply r107655 with fixes; insert the pseudo instruction into 
the block before calling the expansion hook. And don't
put EFLAGS in a mbb's live-in list twice.

llvm-svn: 107691
 2010-07-06 20:24:04 +00:00
Dan Gohman f4f04107ef Revert r107655. 
llvm-svn: 107668
 2010-07-06 15:49:48 +00:00
Dan Gohman 12205645a6 Fix a bunch of custom-inserter functions to handle the case where 
the pseudo instruction is not at the end of the block.

llvm-svn: 107655
 2010-07-06 15:18:19 +00:00
Dan Gohman 3570f81b1e Move PHIElimination's SplitCriticalEdge for MachineBasicBlocks out 
into a utility routine, teach it how to update MachineLoopInfo, and
make use of it in MachineLICM to split critical edges on demand.

llvm-svn: 106555
 2010-06-22 17:25:57 +00:00
Stuart Hastings 0125b6410a Add a DebugLoc parameter to TargetInstrInfo::InsertBranch(). This 
addresses a longstanding deficiency noted in many FIXMEs scattered
across all the targets.

This effectively moves the problem up one level, replacing eleven
FIXMEs in the targets with eight FIXMEs in CodeGen, plus one path
through FastISel where we actually supply a DebugLoc, fixing Radar
7421831.

llvm-svn: 106243
 2010-06-17 22:43:56 +00:00
Dan Gohman 9d2d053e11 Eliminate MachineBasicBlock::const_livein_iterator and make 
MachineBasicBlock::livein_iterator a const_iterator, because
clients shouldn't ever be using the iterator interface to
mutate the livein set.

llvm-svn: 101147
 2010-04-13 16:57:55 +00:00
Bill Wendling 95643404a8 Reapply r100056. It doesn't look like it's the one that's causing a failure. 
llvm-svn: 100065
 2010-04-01 00:00:43 +00:00
Bill Wendling fa9810de3b Revert r100056. It was causing a failure on MSVC. 
llvm-svn: 100062
 2010-03-31 23:26:26 +00:00