caio/clang-p2996
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
31,724 Commits 1 Branch 0 Tags
da17029218cf0c19cf0341dda1ba557471e33871
Commit Graph

3543 Commits

Author SHA1 Message Date
Evan Cheng
0a9d0cabaf Stupid bug. 
llvm-svn: 35126
 2007-03-16 17:50:20 +00:00
Evan Cheng
009ea54262 Sink a binary expression into its use blocks if it is a loop invariant 
computation used as GEP indexes and if the expression can be folded into
target addressing mode of GEP load / store use types.

llvm-svn: 35123
 2007-03-16 08:46:27 +00:00
Evan Cheng
a2a2fd1e55 Added isLegalAddressExpression hook to test if the given expression can be 
folded into target addressing mode for the given type.

llvm-svn: 35121
 2007-03-16 08:42:32 +00:00
Evan Cheng
88de94a4fb Debugging output stuff. 
llvm-svn: 35117
 2007-03-15 21:19:28 +00:00
Evan Cheng
b9e3db67fb Estimate a cost using the possible number of scratch registers required and use 
it as a late BURR scheduling tie-breaker.
Intuitively, it's good to push down instructions whose results are liveout so
their long live ranges won't conflict with other values which are needed inside
the BB. Further prioritize liveout instructions by the number of operands which
are calculated within the BB.

llvm-svn: 35109
 2007-03-14 22:43:40 +00:00
Evan Cheng
2874855302 Try schedule def + use closer whne Sethi-Ullman numbers are the same. 
e.g.
t1 = op t2, c1
t3 = op t4, c2
and the following instructions are both ready.
t2 = op c3
t4 = op c4

Then schedule t2 = op first.
i.e.
t4 = op c4
t2 = op c3
t1 = op t2, c1
t3 = op t4, c2

This creates more short live intervals which work better with the register
allocator.

llvm-svn: 35089
 2007-03-13 23:25:11 +00:00
Evan Cheng
b7004fd889 More flexible TargetLowering LSR hooks for testing whether an immediate is a legal target address immediate or scale. 
llvm-svn: 35076
 2007-03-12 23:37:10 +00:00
Evan Cheng
df7949a8d0 If a virtual register is already marked alive in this block, that means it is 
alive in one of the successor block. Do not add it to the kill list.

llvm-svn: 35041
 2007-03-09 09:48:56 +00:00
Evan Cheng
9bc8d4b6f2 Print preds / succs BB numbers. 
llvm-svn: 35040
 2007-03-09 08:29:08 +00:00
Evan Cheng
91b0790297 Avoid variable shadowing. 
llvm-svn: 35039
 2007-03-09 06:02:17 +00:00
Chris Lattner
ce8aba03ee implement support for floating point constants used as inline asm memory operands. 
llvm-svn: 35033
 2007-03-08 22:29:47 +00:00
Chris Lattner
b7bc3f2d30 make this fail even in non-assert builds. 
llvm-svn: 35025
 2007-03-08 07:07:03 +00:00
Anton Korobeynikov
ed4b303c10 Refactoring of formal parameter flags. Enable properly use of 
zext/sext/aext stuff.

llvm-svn: 35008
 2007-03-07 16:25:09 +00:00
Anton Korobeynikov
dd6ce6900e Cleanup: make SetCounter an instance variable 
llvm-svn: 35007
 2007-03-07 08:25:02 +00:00
Evan Cheng
8a1d09d079 Avoid combining indexed load further. 
llvm-svn: 35005
 2007-03-07 08:07:03 +00:00
Anton Korobeynikov
942fda027f Fix DWARF debugging information on x86/Linux and (hopefully) 
Mingw32/Cygwin targets. This fixes PR978

llvm-svn: 35000
 2007-03-07 02:47:57 +00:00
Evan Cheng
24f65cc91e Minor bug fix. 
llvm-svn: 34985
 2007-03-06 21:58:15 +00:00
Devang Patel
b0743b5d6a Now LoopStrengthReduce is a LoopPass. 
llvm-svn: 34984
 2007-03-06 21:14:09 +00:00
Chris Lattner
13780ac7db big endian 32-bit systems (e.g. ppc32) want to return the high reg first, not 
the lo-reg first.  This is fallout from my ppc calling conv change yesterday,
it fixes test/ExecutionEngine/2003-05-06-LivenessClobber.llx

llvm-svn: 34983
 2007-03-06 20:01:06 +00:00
Anton Korobeynikov
6c5e0ad71c Small eye-candy: use asciz directive everywhere, where possible. 
llvm-svn: 34981
 2007-03-06 19:25:02 +00:00
Evan Cheng
c1b21857a4 If target decides to create an emergency spill slot, make sure it's closest to SP or frame pointer. 
llvm-svn: 34965
 2007-03-06 10:02:38 +00:00
Evan Cheng
372c2c69f8 Register scavenger is now capable of scavenging. It spills a register whose use of furthest away to make it available. 
llvm-svn: 34964
 2007-03-06 10:01:25 +00:00
Anton Korobeynikov
f0b9316552 Enumerate SDISel formal parameter attributes. Make use of new 
enumeration.

llvm-svn: 34960
 2007-03-06 06:10:33 +00:00
Jeff Cohen
b622c11f77 Unbreak VC++ build. 
llvm-svn: 34917
 2007-03-05 00:00:42 +00:00
Chris Lattner
47206667c0 fold away addc nodes when we know there cannot be a carry-out. 
llvm-svn: 34913
 2007-03-04 20:40:38 +00:00
Chris Lattner
2dcc6e7f58 generalize 
llvm-svn: 34910
 2007-03-04 20:08:45 +00:00
Chris Lattner
e2e13caeb2 canonicalize constants to the RHS of addc/adde. If nothing uses the carry out of 
addc, turn it into add.

This allows us to compile:

long long test(long long A, unsigned B) {
  return (A + ((long long)B << 32)) & 123;
}

into:

_test:
        movl $123, %eax
        andl 4(%esp), %eax
        xorl %edx, %edx
        ret

instead of:
_test:
        xorl %edx, %edx
        movl %edx, %eax
        addl 4(%esp), %eax   ;; add of zero
        andl $123, %eax
        ret

llvm-svn: 34909
 2007-03-04 20:03:15 +00:00
Chris Lattner
362621c7ae eliminate some ops if they have an undef RHS 
llvm-svn: 34908
 2007-03-04 20:01:46 +00:00
Reid Spencer
b8825b8c04 Remove unneeded header file. 
llvm-svn: 34903
 2007-03-04 04:41:04 +00:00
Chris Lattner
ca401aac31 Fix CodeGen/Generic/fpowi-promote.ll and PR1239 
llvm-svn: 34893
 2007-03-03 23:43:21 +00:00
Chris Lattner
567b9254cd Add an expand action for ISD label which just deletes the label. 
This "fixes" PR1238.

llvm-svn: 34890
 2007-03-03 19:21:38 +00:00
Evan Cheng
d74cb0e194 Only propagate IsKill if the last use is a kill. 
llvm-svn: 34878
 2007-03-03 06:32:37 +00:00
Nate Begeman
323cf8f602 http://llvm.org/bugs/show_bug.cgi?id=1237 
llvm-svn: 34875
 2007-03-03 06:18:18 +00:00
Evan Cheng
3fd728596e Watch out for cases like this: 
entry (0x8b056f0, LLVM BB @0x8b01b30, ID#0):
Live Ins: %r0 %r1 %r2 %r3
        %reg1032 = tMOVrr %r3<kill>
        %reg1033 = tMOVri8 1
        %reg1034 = tMOVri8 0
        tCMPi8 %reg1029<kill>, 0
        tBcc mbb<entry,0x8b06a10>, 0
    Successors according to CFG: 0x8b06980 0x8b06a10

entry (0x8b06980, LLVM BB @0x8b01b30, ID#12):
    Predecessors according to CFG: 0x8b056f0
        %reg1036 = tMOVrr %reg1034<kill>
    Successors according to CFG: 0x8b06a10

entry (0x8b06a10, LLVM BB @0x8b01b30, ID#13):
    Predecessors according to CFG: 0x8b056f0 0x8b06980
        %reg1024<dead> = tMOVrr %reg1030<kill>
        ...

reg1030 and r1 have already been joined. When reg1024 and reg1030 are joined,
r1 live range from function entry to the tMOVrr instruction are dead. Eliminate
r1 from the livein set of the entry BB, not the BB where the copy is.

llvm-svn: 34866
 2007-03-03 02:18:00 +00:00
Evan Cheng
155ede21e0 Mark dead def as unused. 
llvm-svn: 34844
 2007-03-02 10:43:16 +00:00
Evan Cheng
9d615d1e70 Dead live-in detection bug. 
llvm-svn: 34843
 2007-03-02 10:41:15 +00:00
Evan Cheng
6605c5dbee - Keep track all def and uses of stack slot available in register. 
- Available value use may be deleted (e.g. noop move).

llvm-svn: 34841
 2007-03-02 08:52:00 +00:00
Evan Cheng
08f2f0d145 Invalidate last use of a reused register if the use is a deleted noop copy. 
llvm-svn: 34839
 2007-03-02 05:41:42 +00:00
Jim Laskey
82af5943d1 Emit eh filter info. 
llvm-svn: 34805
 2007-03-01 20:26:43 +00:00
Jim Laskey
6458e6acb9 Collect eh filter info. 
llvm-svn: 34804
 2007-03-01 20:25:32 +00:00
Jim Laskey
d5453d7b56 Lower eh filter intrinsic. 
llvm-svn: 34802
 2007-03-01 20:24:30 +00:00
Evan Cheng
105fb1e0dd Delete register scavenger when done with it. 
llvm-svn: 34786
 2007-03-01 10:23:33 +00:00
Evan Cheng
27bc565497 Add a version of FindUnusedReg that restrict search to a specific set of registers. 
llvm-svn: 34784
 2007-03-01 08:56:24 +00:00
Evan Cheng
d6450ba1dc A restore is promoted to copy (or deleted entirely), remove the kill from the last use of the targetted register. 
llvm-svn: 34773
 2007-03-01 02:27:30 +00:00
Evan Cheng
31215d1395 Interface clean up. 
llvm-svn: 34772
 2007-03-01 02:25:51 +00:00
Evan Cheng
428eaa0059 Interface clean up. 
llvm-svn: 34770
 2007-03-01 02:19:39 +00:00
Evan Cheng
9be123c568 Oops. 
llvm-svn: 34768
 2007-03-01 02:05:35 +00:00
Evan Cheng
8a703ad4b6 Track all joined registers and eliminate unneeded kills after all joining are done. 
llvm-svn: 34767
 2007-03-01 02:03:03 +00:00
Jim Laskey
644af6b68f Chain is on second operand. 
llvm-svn: 34759
 2007-02-28 20:43:58 +00:00
Jim Laskey
c46bf3577d Handle mix of personalities. 
llvm-svn: 34752
 2007-02-28 18:38:31 +00:00