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Author SHA1 Message Date
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
Chris Lattner
238fbfcf67 Fix a dumb bug of mine where we were mishandling the PPC ABI (undef handling). 
This fixes voronoi and bh in Olden, allowing all of olden to pass!

llvm-svn: 23133
 2005-08-29 22:22:57 +00:00
Chris Lattner
05f6bb1b68 Add a new API for nate 
llvm-svn: 23132
 2005-08-29 22:00:00 +00:00
Chris Lattner
32609690c3 Add a new API for Nate 
llvm-svn: 23131
 2005-08-29 21:59:31 +00:00
Andrew Lenharth
f580b078b6 Some of us cared about the the promote path 
llvm-svn: 23130
 2005-08-29 20:46:51 +00:00
Chris Lattner
b0e46fa671 Fix an infinite loop on x86 
llvm-svn: 23129
 2005-08-29 17:30:00 +00:00
Chris Lattner
44fa3e3f08 Allow bugpoint+PPC codegen to use fsqrt 
llvm-svn: 23128
 2005-08-29 13:14:24 +00:00
Chris Lattner
bc3fb85efd Fix a bug the last patch exposed in treeadd among others 
llvm-svn: 23127
 2005-08-29 01:07:02 +00:00
Chris Lattner
9821903d65 A hack to fix a problem folding immedaites. This fixes Olden/power. 
llvm-svn: 23126
 2005-08-29 01:01:01 +00:00
Chris Lattner
eda3f49562 Fix order of operands for copytoreg node when emitting calls. This fixes 
Olden/msFix order of operands for copytoreg node when emitting calls.  This fixes
Olden/mstt.

llvm-svn: 23125
 2005-08-29 00:26:57 +00:00
Chris Lattner
21400573a7 Fix a bug in my previous patch that was using the wrong iterator. This fixes 
Olden/bisort among others.

llvm-svn: 23124
 2005-08-29 00:10:46 +00:00
Chris Lattner
33297adfb6 add operands in the correct order 
llvm-svn: 23123
 2005-08-29 00:02:01 +00:00
Chris Lattner
44dcf508a1 Fix a bug in ReplaceAllUsesWith 
llvm-svn: 23122
 2005-08-28 23:59:36 +00:00
Chris Lattner
bd8cf87228 Fix a bug in FP_EXTEND, implement FP_TO_SINT 
llvm-svn: 23121
 2005-08-28 23:59:09 +00:00
Chris Lattner
8a7276ca25 fix an assertion failure in treeadd 
llvm-svn: 23120
 2005-08-28 23:39:22 +00:00
Reid Spencer
a4acd20ae2 Adjust to member variable name change. 
llvm-svn: 23119
 2005-08-27 19:09:48 +00:00
Reid Spencer
31b20389f9 Change the names of member variables per Chris' instructions, and document 
them more clearly.

llvm-svn: 23118
 2005-08-27 19:09:02 +00:00
Reid Spencer
71966308fc Fix a typo. 
llvm-svn: 23117
 2005-08-27 19:06:05 +00:00
Reid Spencer
46a7fdeb66 Implement PR614: 
These changes modify the makefiles so that the output of flex and bison are
placed in the SRC directory, not the OBJ directory. It is intended that they
be checked in as any other LLVM source so that platforms without convenient
access to flex/bison can be compiled. From now on, if you change a .y or
.l file you *must* also commit the generated .cpp and .h files.

llvm-svn: 23115
 2005-08-27 18:50:39 +00:00
Chris Lattner
e0eae3d244 Disable this code, which broke many tests last night 
llvm-svn: 23114
 2005-08-27 16:16:51 +00:00