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30476 Commits

Author SHA1 Message Date
Reid Spencer 69904f939a Guard further against APInt operations with operands of unequal bit width. 
llvm-svn: 34897
 2007-03-04 01:25:35 +00:00
Chris Lattner 1f7648efba Implement PR1179/PR1232 and test/Transforms/IndVarsSimplify/loop_evaluate_[234].ll 
This makes -indvars require and use LCSSA, updating it as appropriate.

llvm-svn: 34896
 2007-03-04 01:00:28 +00:00
Chris Lattner dd3f9f8c3b New testcases for PR1179/PR1232. 
llvm-svn: 34895
 2007-03-04 00:54:06 +00:00
Reid Spencer ed2ce58244 Get the version number for the LLVM from the autoconf/configure.ac file 
when building the documentation for the web site.

llvm-svn: 34894
 2007-03-04 00:45:50 +00:00
Chris Lattner ca401aac31 Fix CodeGen/Generic/fpowi-promote.ll and PR1239 
llvm-svn: 34893
 2007-03-03 23:43:21 +00:00
Chris Lattner 6053ad4252 New testcase for PR1239 
llvm-svn: 34892
 2007-03-03 23:42:50 +00:00
Chris Lattner ed30abf0cb Make RewriteLoopExitValues far less nested by using continue in the loop 
llvm-svn: 34891
 2007-03-03 22:48:48 +00:00
Chris Lattner 567b9254cd Add an expand action for ISD label which just deletes the label. 
This "fixes" PR1238.

llvm-svn: 34890
 2007-03-03 19:21:38 +00:00
Reid Spencer 04a1829559 Remove unnecessary #include. 
llvm-svn: 34889
 2007-03-03 18:29:16 +00:00
Reid Spencer e586f2e7f7 1. Handle errors around the ModuleProvider. This is necessary since it is 
reading bytecode.
2. The interpreter can delete the ModuleProvider and replace it with
   another so don't depend on it being around after the EE is created.
3. Don't just run llvm_shutdown on exit but actually delete the EE as well.
   This cleans up a vast amount of memory (but not all) that EE retained
   through exit.

llvm-svn: 34888
 2007-03-03 18:21:44 +00:00
Reid Spencer 603682ad1d Deal with error handling better. 
llvm-svn: 34887
 2007-03-03 18:19:18 +00:00
Reid Spencer 30ed3bdaf2 Make the creation functions take an error string. This will help the 
ExecutionEngine report errors on creation (like bytecode stuff) and also
help to get rid of exception handling.

llvm-svn: 34886
 2007-03-03 18:18:11 +00:00
Reid Spencer 1f87660d29 Make sure that when we store a value it is masked to its correct bit 
width. This helps CBE work with non-standard integer bit widths.

llvm-svn: 34885
 2007-03-03 16:33:33 +00:00
Reid Spencer ec8c51c1b1 Complete the APIntification of the interpreter. All asserts for > 64 bits 
have been removed and dealt with. The interpreter should now be able to
execute any LLVM program using any bit width.

llvm-svn: 34884
 2007-03-03 08:38:04 +00:00
Reid Spencer 00919f5769 Avoid memory leakage by having caller construct the APInt for the 
destination value of LoadValueFromMemory.

llvm-svn: 34883
 2007-03-03 08:36:29 +00:00
Reid Spencer c3bfe13ed5 Require the destination GlobalValue for LoadValueFromMemory to be passed 
in as a parameter instead of returned.

llvm-svn: 34882
 2007-03-03 08:35:14 +00:00
Reid Spencer 94a48f06e5 Regularize the interface for conversion functions to/from float/double. 
llvm-svn: 34881
 2007-03-03 08:34:02 +00:00
Reid Spencer 50d7ad9183 Fix constant folding of fp->int bitcast for vectors. 
llvm-svn: 34880
 2007-03-03 08:32:46 +00:00
Reid Spencer cfe415c4e1 Add APIntVal as a possible GenericeValue. 
llvm-svn: 34879
 2007-03-03 07:36:44 +00:00
Evan Cheng d74cb0e194 Only propagate IsKill if the last use is a kill. 
llvm-svn: 34878
 2007-03-03 06:32:37 +00:00
Reid Spencer 54c6e84c83 Implement APInt support for the binary operators. 
Move the getConstantExpr function towards the end of the file so we don't
need a dozen forward declarations.

llvm-svn: 34877
 2007-03-03 06:22:22 +00:00
Reid Spencer 72aafa1d49 1. Have the ExecutionContext keep track of the APInt's allocated and 
ensure they are cleaned up when the stack frame exits.
2. Move a function to the Execution.cpp file where it belongs.

llvm-svn: 34876
 2007-03-03 06:19:55 +00:00
Nate Begeman 323cf8f602 http://llvm.org/bugs/show_bug.cgi?id=1237 
llvm-svn: 34875
 2007-03-03 06:18:18 +00:00
Reid Spencer 815f8dd225 Implement loading and storing of APInt values from memory. 
llvm-svn: 34874
 2007-03-03 06:18:03 +00:00
Reid Spencer 1a7d446963 Make getNumWords public so that those using getRawData stand a chance of 
not reading beyond the end of the buffer returned.

llvm-svn: 34873
 2007-03-03 06:17:23 +00:00
Reid Spencer 22c4fedabf Add names for some of the operators. This is needed for the macros in 
the Interpreter.

llvm-svn: 34872
 2007-03-03 05:37:23 +00:00
Nick Lewycky e6049c2f08 Emit low/high immediate loads properly for Linux/PPC. 
llvm-svn: 34871
 2007-03-03 05:29:51 +00:00
Chris Lattner da1d04a057 my recent change caused a failure in a bswap testcase, because it changed 
the order that instcombine processed instructions in the testcase.  The end
result is that instcombine finished with:

define i16 @test1(i16 %a) {
        %tmp = zext i16 %a to i32               ; <i32> [#uses=2]
        %tmp21 = lshr i32 %tmp, 8               ; <i32> [#uses=1]
        %tmp5 = shl i32 %tmp, 8         ; <i32> [#uses=1]
        %tmp.upgrd.32 = or i32 %tmp21, %tmp5            ; <i32> [#uses=1]
        %tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16           ; <i16> [#uses=1]
        ret i16 %tmp.upgrd.3
}

which can't get matched as a bswap.

This patch makes instcombine more sophisticated about removing truncating
casts, allowing it to turn this into:

define i16 @test2(i16 %a) {
        %tmp211 = lshr i16 %a, 8
        %tmp52 = shl i16 %a, 8
        %tmp.upgrd.323 = or i16 %tmp211, %tmp52
        ret i16 %tmp.upgrd.323
}

which then matches as bswap.  This fixes bswap.ll and implements
InstCombine/cast2.ll:test[12].  This also implements cast elimination of
add/sub.

llvm-svn: 34870
 2007-03-03 05:27:34 +00:00
Chris Lattner 05e93d7f05 new testcase: instcombine should remove all the casts. 
llvm-svn: 34869
 2007-03-03 05:24:06 +00:00
Nick Lewycky db42295ff2 Translate bit operations to English. 
llvm-svn: 34868
 2007-03-03 03:14:40 +00:00
Chris Lattner c1991789c5 instcombine doesn't do CSE, simplify unrelated detail 
llvm-svn: 34867
 2007-03-03 02:27:02 +00:00
Evan Cheng 3fd728596e Watch out for cases like this: 
entry (0x8b056f0, LLVM BB @0x8b01b30, ID#0):
Live Ins: %r0 %r1 %r2 %r3
        %reg1032 = tMOVrr %r3<kill>
        %reg1033 = tMOVri8 1
        %reg1034 = tMOVri8 0
        tCMPi8 %reg1029<kill>, 0
        tBcc mbb<entry,0x8b06a10>, 0
    Successors according to CFG: 0x8b06980 0x8b06a10

entry (0x8b06980, LLVM BB @0x8b01b30, ID#12):
    Predecessors according to CFG: 0x8b056f0
        %reg1036 = tMOVrr %reg1034<kill>
    Successors according to CFG: 0x8b06a10

entry (0x8b06a10, LLVM BB @0x8b01b30, ID#13):
    Predecessors according to CFG: 0x8b056f0 0x8b06980
        %reg1024<dead> = tMOVrr %reg1030<kill>
        ...

reg1030 and r1 have already been joined. When reg1024 and reg1030 are joined,
r1 live range from function entry to the tMOVrr instruction are dead. Eliminate
r1 from the livein set of the entry BB, not the BB where the copy is.

llvm-svn: 34866
 2007-03-03 02:18:00 +00:00
Chris Lattner 960a543037 add a top-level iteration loop to instcombine. This means that it will never 
finish without combining something it is capable of.

llvm-svn: 34865
 2007-03-03 02:04:50 +00:00
Reid Spencer c34dedf686 APIntify this pass. 
llvm-svn: 34863
 2007-03-03 00:48:31 +00:00
Reid Spencer 3588ab15d1 Add isPositive for symmetry with isNegative. 
llvm-svn: 34862
 2007-03-03 00:24:39 +00:00
Reid Spencer 53a3739c80 Finally get this patch right :) 
Replace expensive getZExtValue() == 0 calls with isZero() calls.

llvm-svn: 34861
 2007-03-02 23:51:25 +00:00
Reid Spencer ba547cbb2a Dang, I've done that twice now! Undo previous commit. 
llvm-svn: 34860
 2007-03-02 23:37:53 +00:00
Reid Spencer 558990e189 Use more efficient test for one value in a ConstantInt. 
llvm-svn: 34859
 2007-03-02 23:35:28 +00:00
Reid Spencer 29fe20a98b Guard against huge loop trip counts in an APInt safe way. 
llvm-svn: 34858
 2007-03-02 23:31:34 +00:00
Evan Cheng deaea25eb9 X86-64 VACOPY needs custom expansion. va_list is a struct { i32, i32, i8*, i8* }. 
llvm-svn: 34857
 2007-03-02 23:16:35 +00:00
Reid Spencer dec03a08d6 Make sure debug code is not evaluated in non-debug case. 
llvm-svn: 34856
 2007-03-02 23:15:21 +00:00
Reid Spencer 1e102971d2 1. Sort switch cases using APInt safe comparison. 
2. Make sure debug output of APInt values is safe for all bit widths.

llvm-svn: 34855
 2007-03-02 23:05:28 +00:00
Reid Spencer 43376a74af Use APInt safe isOne() method on ConstantInt instead of getZExtValue()==1 
llvm-svn: 34854
 2007-03-02 23:03:17 +00:00
Reid Spencer bb38d79ad6 Make sorting of ConstantInt be APInt clean through use of ult function. 
llvm-svn: 34853
 2007-03-02 23:01:14 +00:00
Reid Spencer 1825dd0d7c Fix ashr for bitwidths > 64. This is now validated up to 1024 bits. 
llvm-svn: 34852
 2007-03-02 22:39:11 +00:00
Anton Korobeynikov e41e3fc74e Fix uninitialized use of variable. Remove tabs and fix identation. 
llvm-svn: 34850
 2007-03-02 22:19:41 +00:00
Anton Korobeynikov 57af2a4f3b Simplify things 
llvm-svn: 34849
 2007-03-02 21:50:27 +00:00
Chris Lattner b15e2b182f Fix a significant algorithm problem with the instcombine worklist. removing 
a value from the worklist required scanning the entire worklist to remove all
entries.  We now use a combination map+vector to prevent duplicates from
happening and prevent the scan.  This speeds up instcombine on a large file
from the llvm-gcc bootstrap from 189.7s to 4.84s in a debug build and from
5.04s to 1.37s in a release build.

llvm-svn: 34848
 2007-03-02 21:28:56 +00:00
Chris Lattner 51f5457ad4 minor cleanup 
llvm-svn: 34846
 2007-03-02 19:59:19 +00:00
Chris Lattner c3b68788bb Fix PR1234 by working around a compiler bug. 
llvm-svn: 34845
 2007-03-02 18:16:29 +00:00