398602a6eb
Be more aggressive in pruning unnecessary PHI nodes when doing PHI construction.
...
llvm-svn: 41080
2007-08-14 18:16:29 +00:00
676070d503
Make GVN iterative.
...
llvm-svn: 41078
2007-08-14 18:04:11 +00:00
a7b220f23a
Fix a case where GVN was failing to return true when it had, in fact, modified
...
the function.
llvm-svn: 41077
2007-08-14 17:59:48 +00:00
367260c0df
Assert sooner. Fix wordings.
...
llvm-svn: 41075
2007-08-14 16:53:52 +00:00
f120013eca
No need to use iterator to erase basic block.
...
llvm-svn: 41074
2007-08-14 16:53:24 +00:00
687dbf1a99
tcl seems to hate |& for some reason.
...
llvm-svn: 41073
2007-08-14 16:19:35 +00:00
0e92458068
switch this to use fastcc to avoid fpstack traffic on x86-32. Switch to
...
using the count script instead of wc -l
llvm-svn: 41072
2007-08-14 16:14:10 +00:00
5c6d53d2ff
Update test case. A spill should now be deleted.
...
llvm-svn: 41070
2007-08-14 09:16:00 +00:00
234386509b
If a spilled value is being reused and the use is a kill, that means there are
...
no more uses within the MBB and the spilled value isn't live out of the MBB.
Then it's safe to delete the spill store.
llvm-svn: 41069
2007-08-14 09:11:18 +00:00
5e221dbe8f
Spiller reuse test case.
...
llvm-svn: 41068
2007-08-14 05:51:03 +00:00
78a8806f4f
If a rematerializable def is not deleted, i.e. it is also spilled, check if the
...
spilled value is available for reuse.
llvm-svn: 41067
2007-08-14 05:42:54 +00:00
74c69f7588
Kill info update bugs.
...
llvm-svn: 41064
2007-08-14 01:56:58 +00:00
dbe8497d45
Handle last value assignments.
...
llvm-svn: 41063
2007-08-14 01:30:57 +00:00
f74ccbb4e8
StartValue is already calculated.
...
llvm-svn: 41062
2007-08-14 00:15:45 +00:00
2814fe847d
Now capable of rematerializing coalesced live intervals.
...
llvm-svn: 41061
2007-08-13 23:54:16 +00:00
33820da1da
Re-implement trivial rematerialization. This allows def MIs whose live intervals that are coalesced to be rematerialized.
...
llvm-svn: 41060
2007-08-13 23:45:17 +00:00
b2823dac69
Fix a typo pointd out by Maarten ter Huurne.
...
llvm-svn: 41059
2007-08-13 23:27:11 +00:00
948653915f
Preserve simple analysis.
...
llvm-svn: 41054
2007-08-13 22:22:13 +00:00
b8a41bb4f1
Preserve dominator info.
...
llvm-svn: 41053
2007-08-13 22:13:24 +00:00
c0fa0c52b3
Add methods to erase basic block entry.
...
llvm-svn: 41052
2007-08-13 22:10:29 +00:00
da48cf40db
If NewBB dominates DestBB then DestBB is not part of NewBB's dominance frontier.
...
llvm-svn: 41051
2007-08-13 21:59:17 +00:00
2b40caa861
move assertion into mutex guard, a partial fix for PR1606.
...
llvm-svn: 41050
2007-08-13 20:08:16 +00:00
ccb3611881
When x86 addresses matching exceeds its recursion limit, check to
...
see if the base register is already occupied before assuming it can be
used. This fixes bogus code generation in the accompanying testcase.
llvm-svn: 41049
2007-08-13 20:03:06 +00:00
4e7f673f65
Fix PR1607
...
llvm-svn: 41048
2007-08-13 18:42:37 +00:00
3251377104
test that the ptr-to-method is succefully eliminated, leaving just the vtable dispatch.
...
llvm-svn: 41047
2007-08-13 17:17:03 +00:00
aadc778782
Constant fold: getelementptr (i8* inttoptr (i64 1 to i8*), i32 -1)
...
Into: inttoptr (i64 0 to i8*) -> null
This occurs in the example in PR1602. With this fixed, we now compile
the example in PR1602 into fully "devirtualized" code:
define void @_Z1g1S(%struct.S* noalias %s) {
entry: %tmp131415 = getelementptr %struct.S* %s, i32 0, i32 0 ; <i32 (...)***> [#uses=1] %tmp16 = load i32 (...)*** %tmp131415, align 4 ; <i32 (...)**> [#uses=1]
%tmp26277 = load i32 (...)** %tmp16 ; <i32 (...)*> [#uses=1]
%tmp2829 = bitcast i32 (...)* %tmp26277 to void (%struct.S*)* ; <void (%struct.S*)*> [#uses=1]
tail call void %tmp2829( %struct.S* %s )
ret void
}
This still has the vtable dispatch (as required) but does not have any pointer
to method cruft left.
llvm-svn: 41046
2007-08-13 17:09:08 +00:00
5ca98c657d
Kill info update bugs.
...
llvm-svn: 41043
2007-08-13 07:12:23 +00:00
ab13178928
Make use of the llvm-ld tool's new ability to read input from stdin to extract
...
the list of link time passes to be run, just as for opt, with the
-debug-pass=Arguments option.
llvm-svn: 41040
2007-08-13 06:19:51 +00:00
7c38b0dc15
Don't build llvm-stub twice.
...
llvm-svn: 41039
2007-08-13 00:25:47 +00:00
1399f64e3b
oops, forgot to commit this.
...
llvm-svn: 41034
2007-08-12 16:55:14 +00:00
f3317d5286
Change casts from old style to new style. This helps document the details
...
better, gives the compiler a chance to validate the cast and reduces warnings
if the user turns on -Wold-style-cast option.
llvm-svn: 41033
2007-08-12 08:12:35 +00:00
f258578206
Split loops and do CFG cleanup.
...
llvm-svn: 41029
2007-08-12 07:02:51 +00:00
9f90f965de
Remove unused variables.
...
llvm-svn: 41028
2007-08-12 04:45:36 +00:00
af21e9550e
No need to remove dead range from soon-to-be-dead live interval. Its val# may be out of whack.
...
llvm-svn: 41024
2007-08-12 01:26:19 +00:00
460e34afed
constant fold ptrtoint(inttoptr) with target data when available. This allows
...
us to fold the entry block of PR1602 to false instead of:
br i1 icmp eq (i32 and (i32 ptrtoint (void (%struct.S*)* inttoptr (i64
1 to void (%struct.S*)*) to i32), i32 1), i32 0), label %cond_next, label
%cond_true
llvm-svn: 41023
2007-08-11 23:49:01 +00:00
99c8ee2977
Transform a load from an undef/zero global into an undef/global even if we
...
have complex pointer manipulation going on. This allows us to compile
stuff like this:
__m128i foo(__m128i x){
static const unsigned int c_0[4] = { 0, 0, 0, 0 };
__m128i v_Zero = _mm_loadu_si128((__m128i*)c_0);
x = _mm_unpacklo_epi8(x, v_Zero);
return x;
}
into:
_foo:
xorps %xmm1, %xmm1
punpcklbw %xmm1, %xmm0
ret
llvm-svn: 41022
2007-08-11 18:48:48 +00:00
750b3dfcf5
expand a note
...
llvm-svn: 41021
2007-08-11 18:19:07 +00:00
ee44ab5b5f
With evan's explicit flag representation, hopefully we will finally be
...
able to 3-addressify away stuff like this:
movl %ecx, %eax
decl %eax
llvm-svn: 41020
2007-08-11 18:16:46 +00:00
3687007119
Now that llvm-ld can accept - as input from stdin, use this feature to extract
...
the pass arguments that it supports.
llvm-svn: 41019
2007-08-11 16:11:22 +00:00
2dc9f13278
Fix a comment typo noticed by Sandro Magi.
...
llvm-svn: 41018
2007-08-11 15:57:56 +00:00
cdbd82ee37
64-bit SSSE3 ops that use MMX registers don't require 16-byte alignment.
...
Make a 'memop' pattern just for them.
llvm-svn: 41017
2007-08-11 09:52:53 +00:00
05cc486c7b
Code to maintain kill information during register coalescing.
...
llvm-svn: 41016
2007-08-11 00:59:19 +00:00
44e79f8aba
Use subregs to improve any_extend code generation when feasible.
...
llvm-svn: 41013
2007-08-10 22:22:41 +00:00
030a59d967
Fix test so it passes.
...
llvm-svn: 41012
2007-08-10 22:20:57 +00:00
b372abab14
Increase efficiency of sign_extend_inreg by using subregisters for truncation. As the README suggests sign_extend_subreg is selected to (sext(trunc)).
...
llvm-svn: 41010
2007-08-10 21:48:46 +00:00
f0c236fb8a
Edit README in light of previous LEA16 commit.
...
llvm-svn: 41009
2007-08-10 21:29:05 +00:00
d36d30b53c
Add 2-addr to 3-addr promotion code that allows 32-bit LEA to be used via subregisters when 16-bit LEA is disabled.
...
llvm-svn: 41007
2007-08-10 21:18:25 +00:00
e081928f49
Move isSubRegOf into MRegisterInfo. Fix a missed move elimination in LowerSubregs and add more debugging output there.
...
llvm-svn: 41005
2007-08-10 21:11:55 +00:00
d305c404be
Do not overuse std::string. Pass around char * directly.
...
llvm-svn: 41001
2007-08-10 18:29:32 +00:00
f417c2cc34
Clone loop.
...
llvm-svn: 40998
2007-08-10 18:07:13 +00:00
Owen Anderson