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20733 Commits

Author SHA1 Message Date
Chris Lattner 7432ceef5c Add a flag to enable a darwin linker optimization 
llvm-svn: 24130
 2005-11-01 00:12:36 +00:00
Chris Lattner 6b63e0c6fd Make constant pool entries use private labels. This is important when you're 
not compiling a whole program at a time :)

llvm-svn: 24129
 2005-10-31 22:12:06 +00:00
Andrew Lenharth d44a8f546d Updated alpha known problems. 
llvm-svn: 24126
 2005-10-31 19:07:29 +00:00
Chris Lattner b7147f6027 Apparently these do pass on some alphas 
llvm-svn: 24125
 2005-10-31 19:06:13 +00:00
Chris Lattner 71d73eb411 Fix an iterator invalidation problem in code used by the -strip pass 
llvm-svn: 24124
 2005-10-31 18:42:37 +00:00
Chris Lattner 09efd4e5b6 Limit the search depth of MaskedValueIsZero to 6 instructions, to avoid 
bad cases.  This fixes Markus's second testcase in PR639, and should
seal it for good.

llvm-svn: 24123
 2005-10-31 18:35:52 +00:00
Jim Laskey 0433df136f Emit itinerary class in instruction info. 
llvm-svn: 24122
 2005-10-31 17:16:46 +00:00
Jim Laskey 3763a50d82 Generate cpu to itinerary map. 
llvm-svn: 24121
 2005-10-31 17:16:01 +00:00
Chris Lattner 14ada0fd4e these tests fail on alpha for some reason 
llvm-svn: 24120
 2005-10-31 16:15:49 +00:00
Jim Laskey 5ce0538253 1. Embed and not inherit vector for NodeGroup. 
2. Iterate operands and not uses (performance.)

3. Some long pending comment changes.

llvm-svn: 24119
 2005-10-31 12:49:09 +00:00
Duraid Madina 88fc69f627 add FP compares and implicit register defs to the dag isel 
llvm-svn: 24118
 2005-10-31 01:42:11 +00:00
Jeff Cohen 94d1562071 Update Getting Started for Visual Studio page. 
llvm-svn: 24117
 2005-10-30 21:00:24 +00:00
Chris Lattner 6871b23d02 Significantly simplify this code and make it more aggressive. Instead of having 
a special case hack for X86, make the hack more general: if an incoming argument
register is not used in any block other than the entry block, don't copy it to
a vreg.  This helps us compile code like this:

%struct.foo = type { int, int, [0 x ubyte] }
int %test(%struct.foo* %X) {
        %tmp1 = getelementptr %struct.foo* %X, int 0, uint 2, int 100
        %tmp = load ubyte* %tmp1                ; <ubyte> [#uses=1]
        %tmp2 = cast ubyte %tmp to int          ; <int> [#uses=1]
        ret int %tmp2
}

to:

_test:
        lbz r3, 108(r3)
        blr

instead of:

_test:
        lbz r2, 108(r3)
        or r3, r2, r2
        blr

The (dead) copy emitted to copy r3 into a vreg for extra-block uses was
increasing the live range of r3 past the load, preventing the coallescing.

This implements CodeGen/PowerPC/reg-coallesce-simple.ll

llvm-svn: 24115
 2005-10-30 19:42:35 +00:00
Chris Lattner 6beef90324 new testcase 
llvm-svn: 24112
 2005-10-30 19:42:18 +00:00
Chris Lattner dd5663dfa0 Reduce the number of copies emitted as machine instructions by 
generating results in vregs that will need them.  In the case of something
like this:  CopyToReg((add X, Y), reg1024), we no longer emit code like
this:

   reg1025 = add X, Y
   reg1024 = reg 1025

Instead, we emit:

   reg1024 = add X, Y

Whoa! :)

llvm-svn: 24111
 2005-10-30 18:54:27 +00:00
Chris Lattner 5c7d731832 If the module has no t-t and the host is an alpha, default to using the Alpha BE 
llvm-svn: 24110
 2005-10-30 16:44:01 +00:00
Duraid Madina 57b7ee9da8 fix some broken comparisons, this affected the Pattern isel too. 
llvm-svn: 24109
 2005-10-30 10:14:19 +00:00
Chris Lattner 48131a8254 The pass was removed, but the spirit lives on 
llvm-svn: 24108
 2005-10-30 07:22:15 +00:00
Chris Lattner e507a15184 This is implemented 
llvm-svn: 24107
 2005-10-30 06:42:12 +00:00
Chris Lattner a70878d4fb Codegen mul by negative power of two with a shift and negate. 
This implements test/Regression/CodeGen/PowerPC/mul-neg-power-2.ll,
producing:

_foo:
        slwi r2, r3, 1
        subfic r3, r2, 63
        blr

instead of:

_foo:
        mulli r2, r3, -2
        addi r3, r2, 63
        blr

llvm-svn: 24106
 2005-10-30 06:41:49 +00:00
Chris Lattner 9cc9f0fca1 new testcase 
llvm-svn: 24103
 2005-10-30 06:37:33 +00:00
Chris Lattner f0b77f9acc Fix a problem that Nate noticed with LSR: 
When inserting code for an addrec expression with a non-unit stride, be
more careful where we insert the multiply.  In particular, insert the multiply
in the outermost loop we can, instead of the requested insertion point.

This allows LSR to notice the mul in the right loop, reducing it when it gets
to it.  This allows it to reduce the multiply, where before it missed it.

This happens quite a bit in the test suite, for example, eliminating 2
multiplies in art, 3 in ammp, 4 in apsi, reducing from 1050 multiplies to
910 muls in galgel (!), from 877 to 859 in applu, and 36 to 30 in bzip2.

This speeds up galgel from 16.45s to 16.01s, applu from 14.21 to 13.94s and
fourinarow from 66.67s to 63.48s.

This implements Transforms/LoopStrengthReduce/nested-reduce.ll

llvm-svn: 24102
 2005-10-30 06:24:33 +00:00
Chris Lattner 67315dc888 new testcase 
llvm-svn: 24099
 2005-10-30 05:14:02 +00:00
Chris Lattner af6b34ff44 Revert an accidental commit. 
llvm-svn: 24098
 2005-10-29 17:01:41 +00:00
Jeff Cohen 99a71ef891 More files deleted. 
llvm-svn: 24097
 2005-10-29 16:51:48 +00:00
Chris Lattner 85b184b292 Make -time-passes output prettier 
llvm-svn: 24096
 2005-10-29 16:45:02 +00:00
Chris Lattner d91df9d941 Make negative immediates in patterns work correctly, silence some warnings 
building the itanium backend.

llvm-svn: 24095
 2005-10-29 16:39:40 +00:00
Duraid Madina 7abaf906e2 add some FP stuff, some mix.* stuff, and constant pool support to the 
DAG instruction selector, which should be destroyed one day (in the pattern
isel also) since ia64 can pack any constant in the instruction stream

llvm-svn: 24094
 2005-10-29 16:08:30 +00:00
Chris Lattner 42f905691e Fix <> in html 
llvm-svn: 24093
 2005-10-29 07:08:19 +00:00
Chris Lattner a69595ee0d First hack-and-slash on the release notes. Comments and improvements welcome 
llvm-svn: 24092
 2005-10-29 07:07:09 +00:00
Chris Lattner d66c42facb Remove the lowerconstantexprs pass 
llvm-svn: 24091
 2005-10-29 05:34:40 +00:00
Chris Lattner 27d351f159 This pass is now obsolete since all targets have moved to the SelectionDAG 
infrastructure and the simple isels have been removed.

llvm-svn: 24090
 2005-10-29 05:33:46 +00:00
Chris Lattner de63fba075 Remove the LowerConstantExpressionsPass pass 
llvm-svn: 24089
 2005-10-29 05:32:20 +00:00
Chris Lattner dcceae104e remove reference to this pass 
llvm-svn: 24088
 2005-10-29 05:28:34 +00:00
Chris Lattner 8ad30360cf Basic updates 
llvm-svn: 24087
 2005-10-29 05:14:01 +00:00
Chris Lattner c86bd2b1cd Buh bye Expression.(cpp|h) 
llvm-svn: 24086
 2005-10-29 04:55:57 +00:00
Chris Lattner 21193ac3c0 remove a dead file 
llvm-svn: 24085
 2005-10-29 04:43:38 +00:00
Chris Lattner 29b04e1021 remove a dead header 
llvm-svn: 24084
 2005-10-29 04:43:10 +00:00
Chris Lattner 752717d4ec Remove dead #include 
llvm-svn: 24083
 2005-10-29 04:41:30 +00:00
Chris Lattner ceb9d5adaa Now that instcombine does this xform, remove it from the -raise pass 
llvm-svn: 24082
 2005-10-29 04:40:23 +00:00
Chris Lattner 8f663e8bbc Pull some code out into a function, give it the ability to see through +. 
This allows us to turn code like malloc(4*x+4) -> malloc int, (x+1)

llvm-svn: 24081
 2005-10-29 04:36:15 +00:00
Duraid Madina c252f33fdb add shladd 
llvm-svn: 24080
 2005-10-29 04:13:40 +00:00
Duraid Madina e71426f581 test for the formation of shladd 
llvm-svn: 24077
 2005-10-29 04:06:49 +00:00
Chris Lattner 8270c33606 Remove a special case, allowing the general case to handle it. No functionality 
change.

llvm-svn: 24076
 2005-10-29 03:19:53 +00:00
Nate Begeman 00cea9b2e0 New case to handle someday 
llvm-svn: 24075
 2005-10-28 23:26:57 +00:00
Chris Lattner 742606ad30 Switch more code over to using getValueAsListOfDefs. Look at all the -'s. :) 
llvm-svn: 24074
 2005-10-28 22:59:53 +00:00
Chris Lattner 7ca53a5783 Don't emit "32" for unordered comparison 
llvm-svn: 24073
 2005-10-28 22:58:07 +00:00
Chris Lattner 7ad0bed89f Rename Record::getValueAsListDef to getValueAsListOfDefs, to more accurately 
reflect what it is.
Convert some more code over to use it.

llvm-svn: 24072
 2005-10-28 22:49:02 +00:00
Chris Lattner 802bd8d94f Use the new interface Jim added 
llvm-svn: 24071
 2005-10-28 22:43:25 +00:00
Jim Laskey dffe5978a3 Removed Mr. Smith from the code. 
llvm-svn: 24070
 2005-10-28 21:47:29 +00:00