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18320 Commits

Author SHA1 Message Date
Anton Korobeynikov
5bb6590218 Fix PR1323 : we haven't updated phi nodes in good manner :) 
llvm-svn: 35963
 2007-04-13 06:53:51 +00:00
Chris Lattner
e7cab7b7a4 arm has r+r*s and r+i addr modes, but no r+i+r*s addr modes. 
llvm-svn: 35962
 2007-04-13 06:50:55 +00:00
Zhou Sheng
dedfc40044 Make the apint construction more effective. 
llvm-svn: 35960
 2007-04-13 05:57:32 +00:00
Chris Lattner
335f1cb1f8 CSE simple binary expressions when they are inserted. This makes LSR produce 
less huge code that needs to be cleaned up by sdisel.

llvm-svn: 35959
 2007-04-13 05:04:18 +00:00
Reid Spencer
d31093d340 Implement review feedback .. don't double search a set. 
llvm-svn: 35957
 2007-04-12 21:57:15 +00:00
Reid Spencer
f1154e6d96 Make sure intrinsics that are lowered to functions make the function weak 
linkage so we only end up with one of them in a program. These are, after
all overloaded and templatish in nature.

llvm-svn: 35956
 2007-04-12 21:53:38 +00:00
Reid Spencer
0325471d3c Provide support for intrinsics that lower themselves to a function body. 
This can happen for intrinsics that are overloaded.  In such cases it is
necessary to emit a function prototype before the body of the function
that calls the intrinsic and to ensure we don't emit it multiple times.

llvm-svn: 35954
 2007-04-12 21:00:45 +00:00
Lauro Ramos Venancio
6c5f53f6ac Implement Thread Local Storage (TLS) in CBackend. 
llvm-svn: 35951
 2007-04-12 18:42:08 +00:00
Lauro Ramos Venancio
a76c2806de Implement the "thread_local" keyword. 
llvm-svn: 35950
 2007-04-12 18:32:50 +00:00
Reid Spencer
1e53c865c2 Fix bugs in generated code for part_select and part_set so that llc doesn't 
barf when CBE is run with a program that contains these intrinsics.

llvm-svn: 35946
 2007-04-12 13:30:14 +00:00
Reid Spencer
76e9a17f61 Fix a bug in PartSet. The replacement value needs to be zext or trunc to 
the size of the value, not just zext. Also, give better names to two BBs.

llvm-svn: 35945
 2007-04-12 12:46:33 +00:00
Chris Lattner
0da8de5848 the result of an inline asm copy can be an arbitrary VT that the register 
class supports.  In the case of vectors, this means we often get the wrong
type (e.g. we get v4f32 instead of v8i16).  Make sure to convert the vector
result to the right type.  This fixes CodeGen/X86/2007-04-11-InlineAsmVectorResult.ll

llvm-svn: 35944
 2007-04-12 06:00:20 +00:00
Chris Lattner
7acaf64d70 fold noop vbitconvert instructions 
llvm-svn: 35943
 2007-04-12 05:58:43 +00:00
Chris Lattner
2f221a83ec Fix weirdness handling single element vectors. 
llvm-svn: 35941
 2007-04-12 04:44:28 +00:00
Chris Lattner
2b6b79b896 Fix mmx paddq, add support for the 'y' register class, though it isn't tested. 
llvm-svn: 35940
 2007-04-12 04:14:49 +00:00
Reid Spencer
82da0eb67c For PR1284: 
Implement the "part_set" intrinsic.

llvm-svn: 35938
 2007-04-12 02:48:46 +00:00
Chris Lattner
9564abbfb5 improve the patch for PR1318 to also support grouped options with custom 
handlers (like the pass list).  My previous fix only supported *new* command
line options, not additions to old ones.

This fixes test/Feature/load_module.ll

llvm-svn: 35935
 2007-04-12 00:36:29 +00:00
Chris Lattner
b97b122176 Fix CodeGen/X86/2007-03-24-InlineAsmPModifier.ll 
llvm-svn: 35926
 2007-04-11 22:29:46 +00:00
Reid Spencer
2afe5c8354 Build Hello by default so it can be used in test cases. 
llvm-svn: 35922
 2007-04-11 21:03:37 +00:00
Chris Lattner
f29ad16397 fix an infinite loop compiling ldecod, notice by JeffC. 
llvm-svn: 35910
 2007-04-11 16:51:53 +00:00
Chris Lattner
e9a9a3f172 Fix incorrect fall-throughs in addr mode code. This fixes CodeGen/ARM/arm-negative-stride.ll 
llvm-svn: 35909
 2007-04-11 16:17:12 +00:00
Chris Lattner
f7451ea3c2 Fix Transforms/ScalarRepl/union-pointer.ll 
llvm-svn: 35906
 2007-04-11 15:45:25 +00:00
Chris Lattner
32f6730bb1 Fix PR1318 by reacting appropriately to a mutating option list. 
llvm-svn: 35905
 2007-04-11 15:35:18 +00:00
Reid Spencer
bd2afc8391 Fix a bug where ICmpInst objects instantiated directly with a name would 
not retain that name. Not noticed because AsmParser always sets name after
construction. However, llvm2cpp noticed.

llvm-svn: 35903
 2007-04-11 13:04:48 +00:00
Reid Spencer
9b497be3c4 Fix an approximate calculation in an assertion not to give false negatives. 
llvm-svn: 35901
 2007-04-11 13:00:04 +00:00
Chris Lattner
27a80589de Turn stuff like: 
icmp slt i32 %X, 0              ; <i1>:0 [#uses=1]
        sext i1 %0 to i32               ; <i32>:1 [#uses=1]

into:

        %X.lobit = ashr i32 %X, 31              ; <i32> [#uses=1]

This implements InstCombine/icmp.ll:test[34]

llvm-svn: 35891
 2007-04-11 06:57:46 +00:00
Chris Lattner
b659c04f13 Simplify some comparisons to arithmetic, this implements: 
Transforms/InstCombine/icmp.ll

llvm-svn: 35890
 2007-04-11 06:53:04 +00:00
Chris Lattner
1d20292190 Fix this harder. 
llvm-svn: 35888
 2007-04-11 06:50:51 +00:00
Chris Lattner
01ebc25b36 don't create shifts by zero, fix some problems with my previous patch 
llvm-svn: 35887
 2007-04-11 06:43:25 +00:00
Chris Lattner
50a7c8f34e canonicalize (x <u 2147483648) -> (x >s -1) and (x >u 2147483647) -> (x <s 0) 
llvm-svn: 35886
 2007-04-11 06:12:58 +00:00
Chris Lattner
cbd4a7e79c fix a miscompilation of: 
define i32 @test(i32 %X) {
entry:
        %Y = and i32 %X, 4              ; <i32> [#uses=1]
        icmp eq i32 %Y, 0               ; <i1>:0 [#uses=1]
        sext i1 %0 to i32               ; <i32>:1 [#uses=1]
        ret i32 %1
}

by moving code out of commonIntCastTransforms into visitZExt.  Simplify the
APInt gymnastics in it etc.

llvm-svn: 35885
 2007-04-11 05:45:39 +00:00
Chris Lattner
b7448f6187 done 
llvm-svn: 35884
 2007-04-11 05:34:00 +00:00
Chris Lattner
0289490285 Teach the codegen to turn [aez]ext (setcc) -> selectcc of 1/0, which often 
allows other simplifications.  For example, this compiles:
int isnegative(unsigned int X) {
   return !(X < 2147483648U);
}

Into this code:

x86:
        movl 4(%esp), %eax
        shrl $31, %eax
        ret
arm:
        mov r0, r0, lsr #31
        bx lr
thumb:
        lsr r0, r0, #31
        bx lr

instead of:

x86:
        cmpl $0, 4(%esp)
        sets %al
        movzbl %al, %eax
        ret

arm:
        mov r3, #0
        cmp r0, #0
        movlt r3, #1
        mov r0, r3
        bx lr

thumb:
        mov r2, #1
        mov r1, #0
        cmp r0, #0
        blt LBB1_2      @entry
LBB1_1: @entry
        cpy r2, r1
LBB1_2: @entry
        cpy r0, r2
        bx lr

Testcase here: test/CodeGen/Generic/ispositive.ll

llvm-svn: 35883
 2007-04-11 05:32:27 +00:00
Chris Lattner
3f0e49403c Codegen integer abs more efficiently using the trick from the PPC CWG. This 
improves codegen on many architectures.  Tests committed as CodeGen/*/iabs.ll

X86 Old:			X86 New:
_test:				_test:
   movl 4(%esp), %ecx		   movl 4(%esp), %eax
   movl %ecx, %eax		   movl %eax, %ecx
   negl %eax			   sarl $31, %ecx
   testl %ecx, %ecx		   addl %ecx, %eax
   cmovns %ecx, %eax		   xorl %ecx, %eax
   ret				   ret

PPC Old:			PPC New:
_test:				_test:
   cmpwi cr0, r3, -1		   srawi r2, r3, 31
   neg r2, r3			   add r3, r3, r2
   bgt cr0, LBB1_2 ;		   xor r3, r3, r2
LBB1_1: ;			   blr
   mr r3, r2
LBB1_2: ;
   blr

ARM Old:			ARM New:
_test:				_test:
   rsb r3, r0, #0		   add r3, r0, r0, asr #31
   cmp r0, #0			   eor r0, r3, r0, asr #31
   movge r3, r0			   bx lr
   mov r0, r3
   bx lr

Thumb Old:			Thumb New:
_test:				_test:
   neg r2, r0			   asr r2, r0, #31
   cmp r0, #0			   add r0, r0, r2
   bge LBB1_2			   eor r0, r2
LBB1_1: @			   bx lr
   cpy r0, r2
LBB1_2: @
   bx lr


Sparc Old:			Sparc New:
test:				test:
   save -96, %o6, %o6		   save -96, %o6, %o6
   sethi 0, %l0			   sra %i0, 31, %l0
   sub %l0, %i0, %l0		   add %i0, %l0, %l1
   subcc %i0, -1, %l1		   xor %l1, %l0, %i0
   bg .BB1_2			   restore %g0, %g0, %g0
   nop				   retl
.BB1_1:				   nop
   or %g0, %l0, %i0
.BB1_2:
   restore %g0, %g0, %g0
   retl
   nop

It also helps alpha/ia64 :)

llvm-svn: 35881
 2007-04-11 05:11:38 +00:00
Chris Lattner
c7c7a4712e fix a regression introduced by my last patch. 
llvm-svn: 35879
 2007-04-11 03:27:24 +00:00
Chris Lattner
2e1f36a4dc Hack to get sys::Path to recognize macho dylibs. 
llvm-svn: 35878
 2007-04-11 03:15:35 +00:00
Reid Spencer
2792e203c5 For PR1146: 
Put the parameter attributes in their own ParamAttr name space. Adjust the
rest of llvm as a result.

llvm-svn: 35877
 2007-04-11 02:44:20 +00:00
Reid Spencer
caf5a6cbd7 Teach sys::Path how to recognize different kinds of object files for ELF 
and Mach-O systems. Additionally, correct the Mach-O logic code to look at
byte 12 not byte 15. Hopefully this fixes the llvm-ld warning on Darwin.

llvm-svn: 35876
 2007-04-11 02:02:09 +00:00
Chris Lattner
4ea7a156ba Simplify SROA conversion to integer in some ways, make it more general in others. 
We now tolerate small amounts of undefined behavior, better emulating what
would happen if the transaction actually occurred in memory.  This fixes
SingleSource/UnitTests/2007-04-10-BitfieldTest.c on PPC, at least until
Devang gets a chance to fix the CFE from doing undefined things with bitfields :)

llvm-svn: 35875
 2007-04-11 00:57:54 +00:00
Reid Spencer
e580735108 Make isDynamicLibrary detect more than just an ELF file. 
llvm-svn: 35874
 2007-04-11 00:49:39 +00:00
Bill Wendling
3b1189afbf Add support for our first SSSE3 instruction "pmulhrsw". 
llvm-svn: 35869
 2007-04-10 22:10:25 +00:00
Chris Lattner
60f3ece40f new micro optzn 
llvm-svn: 35867
 2007-04-10 21:14:01 +00:00
Chris Lattner
3bbd376057 restore support for negative strides 
llvm-svn: 35859
 2007-04-10 03:48:29 +00:00
Chris Lattner
e2444f7ec8 apparently some people commit without building the tree, or they forget to 
commit a LOT of files.

llvm-svn: 35858
 2007-04-10 03:20:39 +00:00
Chris Lattner
8557e71577 unbreak the build :( 
llvm-svn: 35857
 2007-04-10 03:18:19 +00:00
Jeff Cohen
9bc2960be6 Fix build problem. 
llvm-svn: 35856
 2007-04-10 03:10:46 +00:00
Chris Lattner
fe1860b138 Strengthen the boundary conditions of this fold, implementing 
InstCombine/set.ll:test25

llvm-svn: 35852
 2007-04-09 23:52:13 +00:00
Jeff Cohen
bd7d060e79 No longer needed. 
llvm-svn: 35850
 2007-04-09 23:42:32 +00:00
Owen Anderson
5d0148ae7c Re-constify things that don't break the build. Last patch in this 
series, I promise.

llvm-svn: 35848
 2007-04-09 23:38:18 +00:00
Chris Lattner
461f7ed33b remove dead target hooks. 
llvm-svn: 35847
 2007-04-09 23:34:08 +00:00
Chris Lattner
98199016ae remove dead target hooks 
llvm-svn: 35846
 2007-04-09 23:33:39 +00:00
Chris Lattner
3f9ff05309 remove some dead hooks 
llvm-svn: 35845
 2007-04-09 23:31:19 +00:00
Chris Lattner
78fffcb81b eliminate the last uses of some TLI methods. 
llvm-svn: 35844
 2007-04-09 23:29:07 +00:00
Owen Anderson
94e3511ef6 Unconst-ify stuff that broke the build. 
llvm-svn: 35843
 2007-04-09 23:08:26 +00:00
Owen Anderson
3d132f812a Const-ify some parameters, and some cosmetic cleanups. No functionality 
change.

llvm-svn: 35842
 2007-04-09 22:54:50 +00:00
Owen Anderson
148566d2e3 Tabs -> Spaces 
llvm-svn: 35841
 2007-04-09 22:31:43 +00:00
Chris Lattner
ae6e2c0ee5 remove some dead target hooks, subsumed by isLegalAddressingMode 
llvm-svn: 35840
 2007-04-09 22:27:04 +00:00
Owen Anderson
6f5fe179cc Improve some _slow_ behavior introduced in my patches the last few days. 
llvm-svn: 35839
 2007-04-09 22:25:09 +00:00
Chris Lattner
87c89cafb2 switch LSR to use isLegalAddressingMode instead of other simpler hooks 
llvm-svn: 35837
 2007-04-09 22:20:14 +00:00
Devang Patel
70205cceea Check _all_ PHINodes. 
llvm-svn: 35836
 2007-04-09 22:20:10 +00:00
Chris Lattner
b4ef9c8be3 Fix a bug in PPCTargetLowering::isLegalAddressingMode, scales other than 0/1/2 
are always unsupported.

llvm-svn: 35835
 2007-04-09 22:10:05 +00:00
Anton Korobeynikov
6e6b2d493a Use integer log for metric calculation 
llvm-svn: 35834
 2007-04-09 21:57:03 +00:00
Devang Patel
5392489e86 Insert new pre-header before new header. Original pre-header may 
happen to be an entry, in such case, it is not a good idea to
insert new block before entry.

Also fix typo in assertion check.

llvm-svn: 35833
 2007-04-09 21:40:43 +00:00
Chris Lattner
d186d37694 Fix a bug where calling materializeModule could corrupt the module, reading 
multiple copies of the function into the Function*.

llvm-svn: 35831
 2007-04-09 20:28:40 +00:00
Devang Patel
cdea453adb Preserve canonical loop form. 
llvm-svn: 35829
 2007-04-09 20:19:46 +00:00
Jeff Cohen
f489bef844 When the number of elements is zero, don't malloc 32GB on 64-bit systems. 
Fixes unexpected failures on FreeBSD/amd64 of:
  CFrontend/2005-09-24-BitFieldCrash.c:
  CFrontend/2007-02-04-EmptyStruct.c:
  CFrontend/2007-03-26-ZeroWidthBitfield.c:
  CodeGen/Generic/2005-10-18-ZeroSizeStackObject.ll:

llvm-svn: 35828
 2007-04-09 19:26:30 +00:00
Reid Spencer
60da7b09e7 Don't link against System or Support library. These things will already 
be in the opt tool.

llvm-svn: 35827
 2007-04-09 19:17:47 +00:00
Devang Patel
9263a797b3 Do not create new pre-header. Reuse original pre-header. 
llvm-svn: 35825
 2007-04-09 19:04:21 +00:00
Reid Spencer
93a57ef458 For PR1146: 
* Add ParamAttrs to InvokeInst class too.
* Make sure all initializes of ParamAttrs in CallInst and InvokeInst are 0
* Destruct the ParamAttrs in Call/Invoke destructors to avoid memory
  leaks. This will change when ParamAttrsList is uniquified but needs to
  be correct until then.

llvm-svn: 35824
 2007-04-09 18:00:57 +00:00
Reid Spencer
1acc089771 Remove a memory leak, until ParamAttrsList is uniqued. 
llvm-svn: 35823
 2007-04-09 17:20:18 +00:00
Devang Patel
e038420dc6 Simpler for() loops. 
llvm-svn: 35822
 2007-04-09 17:09:13 +00:00
Devang Patel
dd269ce747 Fix future bug. Of course, Chris spotted this. 
Handle Argument or Undef as an incoming PHI value.

llvm-svn: 35821
 2007-04-09 16:41:46 +00:00
Devang Patel
ba5018aaff More cosmetic changes. 
llvm-svn: 35820
 2007-04-09 16:21:29 +00:00
Devang Patel
f66f3dd962 Only cosmetic changes. Zero functionality Change. 
llvm-svn: 35819
 2007-04-09 16:11:48 +00:00
Reid Spencer
d2380cfb76 For PR1146: 
* Add ParamAttrList pointers to Function and CallInst.
* Move the implementation of ParamAttrList from Type.cpp to Function.cpp

llvm-svn: 35818
 2007-04-09 15:01:12 +00:00
Jeff Cohen
b3d61e6c05 Unbreak VC++ build. 
llvm-svn: 35817
 2007-04-09 14:32:59 +00:00
Anton Korobeynikov
6ee97ee42a Next stage into switch lowering refactoring 
1. Fix some bugs in the jump table lowering threshold
2. Implement much better metric for optimal pivot selection
3. Tune thresholds for different lowering methods
4. Implement shift-and trick for lowering small (<machine word
length) cases with few destinations. Good testcase will follow.

llvm-svn: 35816
 2007-04-09 12:31:58 +00:00
Chris Lattner
730f5588be Convert ImmediateDominators::DFSPass from being recursive to being iterative. 
llvm-svn: 35815
 2007-04-09 06:44:42 +00:00
Reid Spencer
2660b8dccb For PR1146: 
Adapt handling of parameter attributes to use the new ParamAttrsList class.

llvm-svn: 35814
 2007-04-09 06:17:21 +00:00
Reid Spencer
3ffd70d6e4 Regenerate 
llvm-svn: 35813
 2007-04-09 06:16:21 +00:00
Reid Spencer
b43eb600c2 For PR1146: 
Use ParamAttrsList for writing parameter attributes. Since they are sparse
now, we also write them sparsely (saves a few bytes). Unfortunately, this
is a bytecode file format change.

llvm-svn: 35811
 2007-04-09 06:14:31 +00:00
Reid Spencer
1f674acbdf For PR1146: 
Simplify construction of FunctionType to use default arguments.

llvm-svn: 35810
 2007-04-09 06:12:07 +00:00
Reid Spencer
a2b16b4ee5 For PR1146: 
Parameter attributes can now be defaulted for intrinsics.

llvm-svn: 35809
 2007-04-09 06:11:23 +00:00
Reid Spencer
3d414b473d For PR1146: 
Adjust writing of parameter attributes to use ParamAttrList class.

llvm-svn: 35808
 2007-04-09 06:10:42 +00:00
Chris Lattner
884f49c47e minor cleanups 
llvm-svn: 35807
 2007-04-09 06:10:06 +00:00
Reid Spencer
6bc0205a2a For PR1146: 
Move parameter attributes functionality to ParamAttrsList class.

llvm-svn: 35806
 2007-04-09 06:07:52 +00:00
Chris Lattner
de148c7887 move a bunch of register constraints from being handled by 
getRegClassForInlineAsmConstraint to being handled by
getRegForInlineAsmConstraint.  This allows us to let the llvm register allocator
allocate, which gives us better code.  For example, X86/2007-01-29-InlineAsm-ir.ll
used to compile to:

_run_init_process:
        subl $4, %esp
        movl %ebx, (%esp)
        xorl %ebx, %ebx
        movl $11, %eax
        movl %ebx, %ecx
        movl %ebx, %edx
        # InlineAsm Start
        push %ebx ; movl %ebx,%ebx ; int $0x80 ; pop %ebx
        # InlineAsm End

Now we get:
_run_init_process:
        xorl %ecx, %ecx
        movl $11, %eax
        movl %ecx, %edx
        # InlineAsm Start
        push %ebx ; movl %ecx,%ebx ; int $0x80 ; pop %ebx
        # InlineAsm End

llvm-svn: 35804
 2007-04-09 05:49:22 +00:00
Chris Lattner
b940a717ac implement support for CodeGen/X86/inline-asm-x-scalar.ll:test3 - i32/i64 values 
used with x constraints.

llvm-svn: 35803
 2007-04-09 05:31:48 +00:00
Chris Lattner
13a530ec7f implement CodeGen/X86/inline-asm-x-scalar.ll:test3 
llvm-svn: 35802
 2007-04-09 05:31:20 +00:00
Chris Lattner
c360f69afe add some assertions 
llvm-svn: 35800
 2007-04-09 05:23:13 +00:00
Chris Lattner
e2d3bf8ecf implement CodeGen/X86/inline-asm-x-scalar.ll 
llvm-svn: 35799
 2007-04-09 05:11:28 +00:00
Owen Anderson
e4c29f0b01 Move isReachableFromEntry out of line to avoid an unnecessary #include 
llvm-svn: 35797
 2007-04-09 04:07:36 +00:00
Chris Lattner
b3c4c64197 Fix a bug that caused alignment information to occasionally get stripped off 
of an allocation instruction when writing to bytecode.

llvm-svn: 35796
 2007-04-09 03:37:36 +00:00
Reid Spencer
4ede44609e Regenerate 
llvm-svn: 35795
 2007-04-09 01:56:05 +00:00
Reid Spencer
93d41cc941 Drop the implementation keyword. 
llvm-svn: 35794
 2007-04-09 01:55:42 +00:00
Chris Lattner
218d43af10 Fix PR1304 and Transforms/InstCombine/2007-04-08-SingleEltVectorCrash.ll 
llvm-svn: 35792
 2007-04-09 01:37:55 +00:00
Chris Lattner
958d804293 Fix a bug introduced with my previous patch, where it didn't correctly handle 
instructions which replace themselves when FI's are rewritten (common on ppc).
This fixes CodeGen/PowerPC/2006-10-17-ppc64-alloca.ll

llvm-svn: 35789
 2007-04-09 01:19:33 +00:00
Chris Lattner
b3d105a4f9 Eliminate useless insertelement instructions. This implements 
Transforms/InstCombine/vec_insertelt.ll and fixes PR1286.

We now compile the code from that bug into:

_foo:
        movl 4(%esp), %eax
        movdqa (%eax), %xmm0
        movl 8(%esp), %ecx
        psllw (%ecx), %xmm0
        movdqa %xmm0, (%eax)
        ret

instead of:

_foo:
        subl $4, %esp
        movl %ebp, (%esp)
        movl %esp, %ebp
        movl 12(%ebp), %eax
        movdqa (%eax), %xmm0
        #IMPLICIT_DEF %eax
        pinsrw $2, %eax, %xmm0
        xorl %ecx, %ecx
        pinsrw $3, %ecx, %xmm0
        pinsrw $4, %eax, %xmm0
        pinsrw $5, %ecx, %xmm0
        pinsrw $6, %eax, %xmm0
        pinsrw $7, %ecx, %xmm0
        movl 8(%ebp), %eax
        movdqa (%eax), %xmm1
        psllw %xmm0, %xmm1
        movdqa %xmm1, (%eax)
        movl %ebp, %esp
        popl %ebp
        ret

woo :)

llvm-svn: 35788
 2007-04-09 01:11:16 +00:00
Owen Anderson
f9a432a613 Cleanup some from my DomSet-removal changes. Add a new 
isReachableFromEntry
test to ETForest to factor a common test out of code.

llvm-svn: 35786
 2007-04-09 00:52:49 +00:00
Chris Lattner
1a746d3b8e Fix CodeGen/Generic/2007-04-08-MultipleFrameIndices.ll and PR1308: 
some instructions can have multiple frame indices in them.  If this happens,
rewrite all of them.

llvm-svn: 35785
 2007-04-09 00:46:10 +00:00