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Author SHA1 Message Date
Chris Lattner
58b3f16797 Add some DEBUG output to the simplifycfg routines 
Fix another non-deterministic behavior, this one should actually speed up the
code though as it was doing silly things.

llvm-svn: 14258
 2004-06-20 01:13:18 +00:00
Reid Spencer
06aff16337 A utility to search the LLVM source tree for a grep pattern. This is a 
replacement for getsrcs.sh which now generates too much text to put on a
Linux command line. The approach taken with llvmgrep is to execute a find
command and execute a grep on each file that matches the name pattern. The
arguments to this script are the same as those of egrep. Note that the -H
and -n options to egrep will always be passed so that you always get the
file and line number of matches.

llvm-svn: 14255
 2004-06-19 20:32:55 +00:00
Chris Lattner
39a31b56ac Now that dominator tree children are built in determinstic order, this horrible code 
can go away

llvm-svn: 14254
 2004-06-19 20:23:35 +00:00
Chris Lattner
a1d29e1b15 compute dominator tree children in a deterministic order that does not depend 
on the address of BasicBlock objects in memory.  This eliminates stuff like this:

 Inorder Dominator Tree:
   [1]  %entry
     [2]  %loopentry
-      [3]  %loopexit
       [3]  %no_exit
-        [4]  %endif
         [4]  %then
+        [4]  %endif
+      [3]  %loopexit
       [3]  %return

llvm-svn: 14253
 2004-06-19 20:13:48 +00:00
Chris Lattner
ba131c993e Print out immediate dominators in program order, not in random order based on the address 
of BasicBlock objects

llvm-svn: 14252
 2004-06-19 20:04:47 +00:00
Chris Lattner
ef8a52f263 This will hopefully fix a heisenbug that Vladimir Merzliakov is running 
into valiantly trying to compile stuff on freebsd.

llvm-svn: 14251
 2004-06-19 19:01:26 +00:00
Reid Spencer
c864bb89bb Add a note about GCC 3.3.2 optimization bug that causes llc to spin. 
llvm-svn: 14250
 2004-06-19 18:24:05 +00:00
Chris Lattner
3d68124555 Fix a nasty bug, noticed by Reid 
llvm-svn: 14249
 2004-06-19 18:15:50 +00:00
Chris Lattner
185f2b060b Fix one source of nondeterminism in the -licm pass: the hoist pass 
was processing blocks in whatever order they happened to end up in the
dominator tree data structure.  Force an ordering.

llvm-svn: 14248
 2004-06-19 08:56:43 +00:00
Chris Lattner
d2720878ec Change to use the StableBasicBlockNumbering class 
llvm-svn: 14247
 2004-06-19 08:42:40 +00:00
Chris Lattner
49af533d57 Initial checkin of the StableBasicBlockNumbering, a little helper class for computing 
(strangely enough) a stable (determinstic) numbering for basic blocks.

llvm-svn: 14246
 2004-06-19 08:41:59 +00:00
Chris Lattner
9b19f34fe2 Fix a tiny bug in the -no-aa pass, in which it did not ever get a target data. 
This is a regression from 1.2, though noone uses -no-aa anyway

llvm-svn: 14245
 2004-06-19 08:05:58 +00:00
Chris Lattner
3aed3a8bf2 Do not let the numbering of PHI nodes placed in the function depend on 
non-deterministic things like the ordering of blocks in the dominance
frontier of a BB.  Unfortunately, I don't know of a better way to solve
this problem than to explicitly sort the BB's in function-order before
processing them.  This is guaranteed to slow the pass down a bit, but
is absolutely necessary to get usable diffs between two different tools
executing the mem2reg or scalarrepl pass.

Before this, bazillions of spurious diff failures occurred all over the
place due to the different order of processing PHIs:

-       %tmp.111 = getelementptr %struct.Connector_struct* %upcon.0.0, uint 0, uint 0
+       %tmp.111 = getelementptr %struct.Connector_struct* %upcon.0.1, uint 0, uint 0

Now, the diffs match.

llvm-svn: 14244
 2004-06-19 07:40:14 +00:00
Chris Lattner
6e7b76ce94 Do not sort by the address of LLVM ConstantInt* objects. This produces 
nondeterministic results that depend on where these objects land in memory.
Instead, sort by the value of the constant, which is stable.

Before this patch, the -simplifycfg pass run from two different compilers
could cause different code to be generated, though it was semantically the
same:

@@ -12258,8 +12258,8 @@
        %s_addr.1 = phi sbyte* [ %s, %entry ], [ %inc.0, %no_exit ]             ; <sbyte*> [#uses=5]
        %tmp.1 = load sbyte* %s_addr.1          ; <sbyte> [#uses=1]
        switch sbyte %tmp.1, label %no_exit [
-                sbyte 0, label %loopexit
                 sbyte 46, label %loopexit
+                sbyte 0, label %loopexit
        ]

We need to stomp all of this stuff out.

llvm-svn: 14243
 2004-06-19 07:02:14 +00:00
Chris Lattner
5b4da6dd16 Do not loop over uses as we delete them. This causes iterators to be 
invalidated out from under us.  This bug goes back to revision 1.1: scary.

llvm-svn: 14242
 2004-06-19 02:02:22 +00:00
Chris Lattner
e42a9cfbb5 Bug fixed 
llvm-svn: 14241
 2004-06-19 01:11:02 +00:00
Chris Lattner
f006210fe9 Test for PR374 
llvm-svn: 14240
 2004-06-19 01:08:12 +00:00
Misha Brukman
e998ced724 Fix relative link to the CVS mirrors. 
llvm-svn: 14239
 2004-06-18 20:18:31 +00:00
Chris Lattner
abab77fd99 Add link to the CVS mirror hosted by Reid 
llvm-svn: 14238
 2004-06-18 20:15:58 +00:00
Misha Brukman
27b8d285cb Add link documenting shared/static library differences across platforms. 
llvm-svn: 14237
 2004-06-18 18:39:00 +00:00
Chris Lattner
59fbde7ac4 Bug fixed 
llvm-svn: 14236
 2004-06-18 17:57:29 +00:00
Misha Brukman
72a2d9f2b9 Capitalize Cygwin. 
llvm-svn: 14235
 2004-06-18 15:54:54 +00:00
Misha Brukman
14bac9f37e * Fix file header and name 
* Order #includes alphabetically

llvm-svn: 14234
 2004-06-18 15:38:49 +00:00
Misha Brukman
86cea2f60a Use the machine-independent method of querying the page size. 
llvm-svn: 14233
 2004-06-18 15:34:07 +00:00
Misha Brukman
d3a8478981 Add a target-independent way to query page size. 
llvm-svn: 14232
 2004-06-18 15:30:25 +00:00
Brian Gaeke
26336244f5 .zero doesn't work in the Solaris assembler. 
llvm-svn: 14231
 2004-06-18 08:59:16 +00:00
Brian Gaeke
6a8de685b3 Get rid of selects the easy way 
llvm-svn: 14230
 2004-06-18 08:46:15 +00:00
Brian Gaeke
a9daa0a519 Make visitAllocaInst() look more like its X86 counterpart. 
llvm-svn: 14229
 2004-06-18 08:45:52 +00:00
Brian Gaeke
ab4687b176 Mess around with allocation order. In particular, I think we ought to be 
using the local & in regs first because they are not clobbered by calls.

llvm-svn: 14228
 2004-06-18 08:19:08 +00:00
Brian Gaeke
f5697cf56c JMPL has a delay slot. 
llvm-svn: 14227
 2004-06-18 08:18:54 +00:00
Brian Gaeke
2a5dec63a6 Clean up the commented-out F3_3 stuff. 
Replace it with a working class for FP instrs.

llvm-svn: 14226
 2004-06-18 06:28:21 +00:00
Brian Gaeke
01309de73d Fix jmpl. 
Add some FP moves.

llvm-svn: 14225
 2004-06-18 06:28:10 +00:00
Brian Gaeke
c045f38dcb Support printing base+offset pairs where the offset is a register. 
Use this for printing the jmpl indirect-call instruction.

llvm-svn: 14224
 2004-06-18 06:27:59 +00:00
Brian Gaeke
92a3e14ac4 Support intrinsic calls (although no particular intrinsics are supported yet). 
Support indirect calls.
Support returning a float value.

llvm-svn: 14223
 2004-06-18 06:27:48 +00:00
Chris Lattner
4f71ea97e7 Calls to __builtin_isunordered and friends no longer cause llvmgcc to ICE. 
llvm-svn: 14222
 2004-06-18 06:26:29 +00:00
Chris Lattner
91b27e01b3 Implement Transforms/InstCombine/and.ll:test17, a common case that 
occurs due to unordered comparison macros in math.h

llvm-svn: 14221
 2004-06-18 06:07:51 +00:00
Chris Lattner
33fc8f4a89 New test 
llvm-svn: 14220
 2004-06-18 06:07:17 +00:00
Chris Lattner
8f9fb1d2ea Do not function resolve intrinsics. This prevents warnings and possible bad 
things from happening due to

declare bool %llvm.isunordered(double, double)
declare bool %llvm.isunordered(float, float)

llvm-svn: 14219
 2004-06-18 05:50:48 +00:00
Chris Lattner
81e7cd04ab Test that C99 unordered comparison functions are not being turned into libc calls 
llvm-svn: 14218
 2004-06-18 05:42:50 +00:00
Brian Gaeke
c5f1146e62 Add load instructions for floating-point registers. 
llvm-svn: 14217
 2004-06-18 05:19:27 +00:00
Brian Gaeke
7a618842f1 Support alloca instructions. 
Support copying floating-point constants to registers.
Add assertion to visitCallInst to abort if we hit a NULL calledFunction, for now.

llvm-svn: 14216
 2004-06-18 05:19:16 +00:00
Chris Lattner
3c61b2dd70 Fix printing of Argument objects, problem found by Patrick Meredith 
llvm-svn: 14215
 2004-06-18 04:07:20 +00:00
Chris Lattner
6fcaa7f2be New testcase for GCC unordered comparison builtins 
llvm-svn: 14214
 2004-06-18 03:39:56 +00:00
Chris Lattner
9e1bbe86ba Codegen sub C, X a little bit better for register pressure. Instead of 
mov REG, C
sub REG, X

generate:

neg X
add X, C

which uses one less reg

llvm-svn: 14213
 2004-06-18 00:50:37 +00:00
Chris Lattner
a5750b975a Fold setcc instructions into select and branches that are not in the same BB as 
the setcc.

llvm-svn: 14212
 2004-06-18 00:29:22 +00:00
Brian Gaeke
b824469b44 Make storeRegToStackSlot slightly shorter. 
Make copyRegToReg return 1 instead of -1.
Edit a comment in emitPrologue().

llvm-svn: 14211
 2004-06-17 22:34:48 +00:00
Brian Gaeke
9a0dc64af6 Set the isBranch and isTerminator flags on branch instructions correctly. 
Add a FIXME about the (currently unused) JMPL instructions.

llvm-svn: 14210
 2004-06-17 22:34:29 +00:00
Brian Gaeke
c82f209e72 Emit stores correctly; don't fail an assertion. 
llvm-svn: 14209
 2004-06-17 22:34:19 +00:00
Brian Gaeke
d084a534a2 Support generating machine instructions for Phi nodes (based on x86, but with 
modifications for 1 LLVM BB --> many MBBs).
Fix store operand order: make it always be Base, Offset, SrcReg (think
"[ Base + Offset ] = SrcReg").
Rewrite visitBranchInst() to be even dumber (but working) -- give up on
the branch fallthrough trick, for the time being.
Make visitSetCondInst() work.

llvm-svn: 14208
 2004-06-17 22:34:08 +00:00
Brian Gaeke
af2408a4ee Recognize more branches. 
llvm-svn: 14207
 2004-06-17 22:33:57 +00:00