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Author SHA1 Message Date
Chris Lattner
f2b775d686 It is NDEBUG not _NDEBUG 
llvm-svn: 23186
 2005-09-01 18:44:10 +00:00
Nate Begeman
517e40a5bb Add the rest of the currently implemented visit routines to the switch 
statement in visit().

llvm-svn: 23185
 2005-09-01 00:33:32 +00:00
Nate Begeman
be2fa8f86f First pass at the DAG Combiner. It isn't used anywhere yet, but it should 
be mostly functional.  It currently has all folds from SelectionDAG.cpp
that do not involve a condition code.

llvm-svn: 23184
 2005-09-01 00:19:25 +00:00
Nate Begeman
a1cffceb07 Add regression test for efficient codegen of i32 x i32 -> hi32(i64) as 
mulhs.

llvm-svn: 23183
 2005-09-01 00:04:03 +00:00
Chris Lattner
ed58907fa3 remove an inappropriate comment 
llvm-svn: 23182
 2005-08-31 22:49:51 +00:00
Chris Lattner
b8dcea186c If a function has live ins/outs, print them 
llvm-svn: 23181
 2005-08-31 22:34:59 +00:00
Chris Lattner
914a0dbba1 Move FCTIWZ handling out of the instruction selectors and into legalization, 
getting them out of the business of making stack slots.

llvm-svn: 23180
 2005-08-31 21:09:52 +00:00
Chris Lattner
ed72c03aa1 Remove dead code 
llvm-svn: 23179
 2005-08-31 20:25:15 +00:00
Chris Lattner
173c3fb3e5 Move SHL,SHR i64 -> legalizer 
llvm-svn: 23178
 2005-08-31 20:23:54 +00:00
Chris Lattner
89c78777c0 Remove code that is now dead from the pattern isel. 
llvm-svn: 23177
 2005-08-31 19:11:36 +00:00
Chris Lattner
353d5c167f lower sra_parts on the dag, implementing it for the dag isel, and exposing 
the ops to dag optimization.

llvm-svn: 23176
 2005-08-31 19:09:57 +00:00
Chris Lattner
fc612f96ec Allow targets to custom expand shifts that are too large for their registers 
llvm-svn: 23173
 2005-08-31 19:01:53 +00:00
Chris Lattner
57412f06ac Add a testcase for nate's patch 
llvm-svn: 23172
 2005-08-31 18:19:50 +00:00
Chris Lattner
eef2e52921 add assert zext/sext to the dag isel 
llvm-svn: 23171
 2005-08-31 18:08:46 +00:00
Chris Lattner
2d4180badc Handle AssertSext/AssertZext nodes, fixing the regressions last night. 
llvm-svn: 23170
 2005-08-31 17:48:04 +00:00
Jeff Cohen
8c454a3024 Fix VC++ precedence warnings 
llvm-svn: 23169
 2005-08-31 02:47:06 +00:00
Nate Begeman
c28c33f5a4 Enable generation of AssertSext and AssertZext in the PPC backend. 
llvm-svn: 23168
 2005-08-31 01:58:39 +00:00
Chris Lattner
3d6bf9e384 Fix 'ret long' to return the high and lo parts in the right registers. This 
fixes crafty and probably others.

llvm-svn: 23167
 2005-08-31 01:34:29 +00:00
Nate Begeman
64ea782435 Sigh, not my day. Fix typo. 
llvm-svn: 23166
 2005-08-31 00:43:49 +00:00
Nate Begeman
d286f16856 Fix a mistake in my previous patch pointed out by sabre; the AssertZext 
case in MaskedValueIsZero was wrong.

llvm-svn: 23165
 2005-08-31 00:43:08 +00:00
Nate Begeman
d754412b26 Remove some unnecessary casts, and add the AssertZext case to 
MaskedValueIsZero.

llvm-svn: 23164
 2005-08-31 00:27:53 +00:00
Nate Begeman
5ad0e12280 Add support for count trailing zeroes, and population count. These are 
needed for folding constants in the upcoming dag combiner.

llvm-svn: 23163
 2005-08-31 00:25:01 +00:00
Chris Lattner
f08ec1bc4f now that physregs can exist in the same dag with multiple types, remove some 
ugly hacks

llvm-svn: 23162
 2005-08-30 22:59:48 +00:00
Chris Lattner
87d45af685 Allow physregs to occur in the dag with multiple types. Though I don't likethis, it is a requirement on PPC, which can have an f32 value in r3 at onepoint in a function and a f64 value in r3 at another point. :( 
This fixes compilation of mesa

llvm-svn: 23161
 2005-08-30 22:38:38 +00:00
Chris Lattner
b06ce2e026 Allow physregs to occur in the dag with multiple types. Though I don't like 
this, it is a requirement on PPC, which can have an f32 value in r3 at one
point in a function and a f64 value in r3 at another point.  :(

llvm-svn: 23160
 2005-08-30 22:38:05 +00:00
Chris Lattner
0739f5a9da Fix type mismatches when passing f32 values to calls 
llvm-svn: 23159
 2005-08-30 21:28:19 +00:00
Chris Lattner
36461b2e37 When checking the fixed intervals, don't forget to check for register aliases. 
This fixes PR621 and Regression/CodeGen/X86/2005-08-30-RegAllocAliasProblem.ll

llvm-svn: 23158
 2005-08-30 21:03:36 +00:00
Chris Lattner
281f3131ba new testcase corresponding to PR621 
llvm-svn: 23157
 2005-08-30 21:02:51 +00:00
Chris Lattner
5202642c06 The dag isel misses both of these, the pattern isel just misses the second 
one.  TODO :)

llvm-svn: 23156
 2005-08-30 18:44:09 +00:00
Chris Lattner
2f4de6af75 Fix some indentation (first hunks). 
Remove code (last hunk) that miscompiled immediate and's, such as
  and uint %tmp.30, 4294958079

into

 andi. r8, r8, 56319
 andis. r8, r8, 65535

instead of:

 li r9, -9217
 and r8, r8, r9

The first always generates zero.

This fixes espresso.

llvm-svn: 23155
 2005-08-30 18:37:48 +00:00
Chris Lattner
fd2708cce1 Fix a problem Nate found where we swapped the operands of SHL/SHR_PARTS. This 
fixes fourinarow

llvm-svn: 23153
 2005-08-30 17:42:59 +00:00
Chris Lattner
6a4bdd85ad codegen ADD_PARTS correctly: put the results in the right registers! This 
fixes fhourstones

llvm-svn: 23152
 2005-08-30 17:40:13 +00:00
Chris Lattner
6a990c392c Fix FreeBench/fourinarow with the dag isel, by not adding a bogus result 
to SHIFT_PARTS nodes

llvm-svn: 23151
 2005-08-30 17:21:17 +00:00
Chris Lattner
025f964997 add operands in the right order, fixing McCat/18-imp with the dag isel 
llvm-svn: 23150
 2005-08-30 17:13:58 +00:00
Chris Lattner
772c8814b6 Fix a miscompile of PtrDist/bc. Sign extending bools is not the right thing, 
at least tends to expose problems elsewhere.

llvm-svn: 23149
 2005-08-30 16:56:19 +00:00
Nate Begeman
25755f7f00 Remove a bogus piece of my AssertSext/AssertZext patch. oops. 
llvm-svn: 23148
 2005-08-30 02:54:28 +00:00
Nate Begeman
dc36f47d99 Add support for AssertSext and AssertZext, folding other extensions with 
them.  This allows for elminination of redundant extends in the entry
blocks of functions on PowerPC.

Add support for i32 x i32 -> i64 multiplies, by recognizing when the inputs
to ISD::MUL in ExpandOp are actually just extended i32 values and not real
i64 values.  this allows us to codegen

int mulhs(int a, int b) { return ((long long)a * b) >> 32; }
as:
_mulhs:
        mulhw r3, r4, r3
        blr

instead of:
_mulhs:
        mulhwu r2, r4, r3
        srawi r5, r3, 31
        mullw r5, r4, r5
        add r2, r2, r5
        srawi r4, r4, 31
        mullw r3, r4, r3
        add r3, r2, r3
        blr

with a similar improvement on x86.

llvm-svn: 23147
 2005-08-30 02:44:00 +00:00
Nate Begeman
f279937fd9 Add AssertSext, AssertZext nodes for targets that pass arguments in 
registers, and the incoming values have already been zero or sign extended
from the appopriate type to the register width.

llvm-svn: 23146
 2005-08-30 02:39:32 +00:00
Chris Lattner
a611caeec8 Name this variable to be what it really is! 
llvm-svn: 23145
 2005-08-30 01:58:51 +00:00
Chris Lattner
56051a0f92 Handle CopyToReg nodes with flag operands correctly 
llvm-svn: 23144
 2005-08-30 01:57:23 +00:00
Chris Lattner
0e6343b2e4 Make sure the selector emits register register copies with flag operands 
linking them to calls when appropriate, this prevents the scheduler from
pulling these copies away from the call.

This fixes Ptrdist/yacr2

llvm-svn: 23143
 2005-08-30 01:57:02 +00:00
Chris Lattner
d6753aa388 add some method variants 
llvm-svn: 23142
 2005-08-30 01:56:13 +00:00
Chris Lattner
66ff5ca72d The first operand to AND does not always have more than two operands. This 
fixes MediaBench/toast with the dag selector

llvm-svn: 23141
 2005-08-30 00:59:16 +00:00
Chris Lattner
a31670b930 Fix a bug in my patch for legalizing to fsel. It cannot handle seteq/setne, 
which I failed to include when I moved the code over.  This fixes
MallocBench/gs.

llvm-svn: 23140
 2005-08-30 00:45:18 +00:00
Chris Lattner
874adc990b emit FMR instructions to convert f64<->f32 instructions, so things like 
STOREs, know the right type to store.

llvm-svn: 23139
 2005-08-30 00:30:43 +00:00
Chris Lattner
14f50b0df9 Fix some really strange indentation that xcode likes to use. 
no xcode, this is not right:

   if (!foo) break;
     X;

llvm-svn: 23138
 2005-08-30 00:19:00 +00:00
Chris Lattner
5c81e4b034 fix a crash in cfrac 
llvm-svn: 23137
 2005-08-29 23:49:25 +00:00
Chris Lattner
7a6dfa3f21 Implement DYNAMIC_STACKALLOC, wrap some long lines 
llvm-svn: 23136
 2005-08-29 23:30:11 +00:00
Chris Lattner
774b9718dc Add a hack to avoid some horrible code in some cases by always emitting 
token chains first.  For this C function:

int test() {
  int i;
  for (i = 0; i < 100000; ++i)
    foo();
}

Instead of emitting this (condition before call)

.LBB_test_1:    ; no_exit
        addi r30, r30, 1
        lis r2, 1
        ori r2, r2, 34464
        cmpw cr2, r30, r2
        bl L_foo$stub
        bne cr2, .LBB_test_1    ; no_exit

Emit this:

.LBB_test_1:    ; no_exit
        bl L_foo$stub
        addi r30, r30, 1
        lis r2, 1
        ori r2, r2, 34464
        cmpw cr0, r30, r2
        bne cr0, .LBB_test_1    ; no_exit

Which makes it so we don't have to save/restore cr2 in the prolog/epilog of
the function.

This also makes the code much more similar to what the pattern isel produces.

llvm-svn: 23135
 2005-08-29 23:21:29 +00:00
Chris Lattner
1a17dba9d1 improve comment 
llvm-svn: 23134
 2005-08-29 22:48:32 +00:00