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2858 Commits

Author SHA1 Message Date
Jim Laskey 6549d22ef9 Alias analysis code clean ups. 
llvm-svn: 30753
 2006-10-05 15:07:25 +00:00
Chris Lattner 66c1625a37 Emit pic jumptables to the same section that the function is emitted to, 
allowing label differences to work.  This fixes CodeGen/X86/pic_jumptable.ll

llvm-svn: 30744
 2006-10-05 03:13:28 +00:00
Chris Lattner a6a570e02f Pass the MachineFunction into EmitJumpTableInfo. 
llvm-svn: 30742
 2006-10-05 03:01:21 +00:00
Chris Lattner dc82241182 move getSectionForFunction to AsmPrinter 
llvm-svn: 30736
 2006-10-05 02:42:47 +00:00
Evan Cheng f80dfa83a0 Fix some typos that can cause a flag value to have more than one use. 
llvm-svn: 30727
 2006-10-04 22:23:53 +00:00
Jim Laskey 708d0db2d8 More extensive alias analysis. 
llvm-svn: 30721
 2006-10-04 16:53:27 +00:00
Jim Laskey 0d5a0eae57 More long term solution 
llvm-svn: 30720
 2006-10-04 10:40:15 +00:00
Jim Laskey 66b0b55816 Work around for some problems with templates. 
llvm-svn: 30715
 2006-10-04 01:43:13 +00:00
Evan Cheng 5d9fd977d3 Combine ISD::EXTLOAD, ISD::SEXTLOAD, ISD::ZEXTLOAD into ISD::LOADX. Add an 
extra operand to LOADX to specify the exact value extension type.

llvm-svn: 30714
 2006-10-04 00:56:09 +00:00
Chris Lattner fc416faaa0 Use $( $| $) to represent alternatives in asm blocks instead of {|}. This 
is needed to support targets where {|} aren't special symbols.

llvm-svn: 30712
 2006-10-03 23:27:09 +00:00
Evan Cheng 91d76cb27f Fix an obvious typo. 
llvm-svn: 30711
 2006-10-03 23:08:27 +00:00
Chris Lattner bd7286e606 Bugfixes 
llvm-svn: 30709
 2006-10-03 20:19:23 +00:00
Chris Lattner de154b1737 Print the MBB ID # along with the bb tag in the -print-machine-instrs output. 
llvm-svn: 30708
 2006-10-03 20:17:24 +00:00
Chris Lattner 64fd9487bd Provide a function that ensures MBB numbering is dense and inorder. This 
can be used by MachineFunctionPasses who need this property.

llvm-svn: 30706
 2006-10-03 19:18:57 +00:00
Bill Wendling 984f0ce06b Fix for PR929. The PHI nodes were being gone through for each instruction 
in a successor block for every block...resulting in some O(N^k) algorithm
which wasn't very good for performance. Calculating this information up
front and keeping it in a map made it much faster.

llvm-svn: 30697
 2006-10-03 07:20:20 +00:00
Jim Laskey e73a22514d Debugging kruft 
llvm-svn: 30688
 2006-10-02 13:01:17 +00:00
Jim Laskey 1368c265da Add ability to annotate (color) nodes in a viewGraph. 
llvm-svn: 30686
 2006-10-02 12:26:53 +00:00
Chris Lattner eea983eb5d simplify code 
llvm-svn: 30659
 2006-09-28 23:17:41 +00:00
Evan Cheng bcf1b4120f TargetRegisterClass specifies the desired spill alignment. However, it cannot be honored if stack alignment is smaller. 
llvm-svn: 30648
 2006-09-28 18:52:32 +00:00
Bill Wendling 5d409822d6 "Once more into the breach, dear friends, once more, or fill the wall up 
with our English dead."

No! Really! Serious this time...It was how the vreg uses were being
adjusted that was causing hte Olden tests to fail. I corrected this and
the Olden and Regression tests all passed.

llvm-svn: 30644
 2006-09-28 07:10:24 +00:00
Chris Lattner a9caf95591 refactor critical edge breaking out into the SplitCritEdgesForPHIConstants method. 
This is a baby step towards fixing PR925.

llvm-svn: 30643
 2006-09-28 06:17:10 +00:00
Chris Lattner 764caf6129 re-re-revert this, back to the right revision. It currently breaks bisort/mst 
in olden among others.

llvm-svn: 30637
 2006-09-28 00:11:54 +00:00
Evan Cheng d31f55c236 PEI now place callee save spills closest to the address pointed to by the 
incoming stack. This allows X86 backend to use push / pop in epilogue /
prologue.

llvm-svn: 30636
 2006-09-28 00:10:27 +00:00
Chris Lattner 9f7d0d1dc5 re-revert this patch, bisort and mst are still broken in Olden. 
llvm-svn: 30634
 2006-09-28 00:04:21 +00:00
Bill Wendling 1f29e6c5c5 Reapplying this patch. With the newest commits, the error in Olden/bisort 
has disappeared.

llvm-svn: 30633
 2006-09-27 22:37:35 +00:00
Chris Lattner 5f6c93701b Temporarily revert this. This breaks Olden/bisort on PPC 
llvm-svn: 30628
 2006-09-27 16:59:16 +00:00
Bill Wendling 0a7f617a6c PR878: Instead of calculating the vreg to PHI use count everytime we get 
a function, do it up front in linear time (going through all of the
instructions once). We create a map out of them. Then it's no problem to
use the information in it during elimination...

llvm-svn: 30624
 2006-09-27 09:04:15 +00:00
Chris Lattner 30b4708df2 Add support for ${:private} which prints "L" on darwin. 
llvm-svn: 30620
 2006-09-27 00:06:07 +00:00
Chris Lattner a32814b033 Add support for ${:comment}, which expands to the current target's comment 
character, and ${:uid} which expands to a unique ID for the MachineInstr.
More can be added if/when they are needed.

llvm-svn: 30619
 2006-09-26 23:59:50 +00:00
Evan Cheng 5405c06737 Rename function. It's determining which callee-save registers to save. 
llvm-svn: 30616
 2006-09-26 22:29:31 +00:00
Andrew Lenharth c19ef92403 Comments on JumpTableness 
llvm-svn: 30615
 2006-09-26 20:02:30 +00:00
Jim Laskey 60832693a7 Load chain check is not needed 
llvm-svn: 30613
 2006-09-26 17:44:58 +00:00
Jim Laskey dde51671e5 Chain can be any operand 
llvm-svn: 30611
 2006-09-26 09:32:41 +00:00
Jim Laskey 5f3e0af9d0 Wrong size for load 
llvm-svn: 30610
 2006-09-26 08:14:06 +00:00
Jim Laskey b4a864d533 Can't move a load node if it's chain is not used. 
llvm-svn: 30609
 2006-09-26 07:37:42 +00:00
Chris Lattner 9a1e91b107 print the preds of each MBB 
llvm-svn: 30606
 2006-09-26 03:41:59 +00:00
Chris Lattner 66af390631 Add support for targets that want to do something with the llvm.used list, 
because they have an aggressive linker that does dead code stripping.

llvm-svn: 30604
 2006-09-26 03:38:18 +00:00
Jim Laskey 7aa0638aa9 Accidental enable of bad code 
llvm-svn: 30601
 2006-09-25 21:11:32 +00:00
Jim Laskey b5534e5c28 Fix chain dropping in load and drop unused stores in ret blocks. 
llvm-svn: 30600
 2006-09-25 19:32:58 +00:00
Jim Laskey d07be232ba Core antialiasing for load and store. 
llvm-svn: 30597
 2006-09-25 16:29:54 +00:00
Andrew Lenharth 783a4a9d86 Add support for other relocation bases to jump tables, as well as custom asm directives 
llvm-svn: 30593
 2006-09-24 19:45:58 +00:00
Evan Cheng 77c0757f8b PIC jump table entries are always 32-bit. This fixes PIC jump table support on X86-64. 
llvm-svn: 30590
 2006-09-24 05:22:38 +00:00
Evan Cheng 449a0c7e33 Make it work for DAG combine of multi-value nodes. 
llvm-svn: 30573
 2006-09-21 19:04:05 +00:00
Jim Laskey 35f7eebb49 core corrections 
llvm-svn: 30570
 2006-09-21 17:35:47 +00:00
Jim Laskey 5d19d59017 Basic "in frame" alias analysis. 
llvm-svn: 30568
 2006-09-21 16:28:59 +00:00
Chris Lattner 082db3f9aa fold (aext (and (trunc x), cst)) -> (and x, cst). 
llvm-svn: 30561
 2006-09-21 06:40:43 +00:00
Chris Lattner fa9f92cf65 Check the right value type. This fixes 186.crafty on x86 
llvm-svn: 30560
 2006-09-21 06:17:39 +00:00
Chris Lattner 8d8a3bf9c9 Compile: 
int %test(ulong *%tmp) {
        %tmp = load ulong* %tmp         ; <ulong> [#uses=1]
        %tmp.mask = shr ulong %tmp, ubyte 50            ; <ulong> [#uses=1]
        %tmp.mask = cast ulong %tmp.mask to ubyte
        %tmp2 = and ubyte %tmp.mask, 3          ; <ubyte> [#uses=1]
        %tmp2 = cast ubyte %tmp2 to int         ; <int> [#uses=1]
        ret int %tmp2
}

to:

_test:
        movl 4(%esp), %eax
        movl 4(%eax), %eax
        shrl $18, %eax
        andl $3, %eax
        ret

instead of:

_test:
        movl 4(%esp), %eax
        movl 4(%eax), %eax
        shrl $18, %eax
        # TRUNCATE movb %al, %al
        andb $3, %al
        movzbl %al, %eax
        ret

llvm-svn: 30558
 2006-09-21 06:14:31 +00:00
Chris Lattner a31f0a622b Generalize (zext (truncate x)) and (sext (truncate x)) folding to work when 
the src/dst are not the same size.  This catches things like "truncate
32-bit X to 8 bits, then zext to 16", which happens a bit on X86.

llvm-svn: 30557
 2006-09-21 06:00:20 +00:00
Chris Lattner c8cd62d381 Compile: 
int test3(int a, int b) { return (a < 0) ? a : 0; }

to:

_test3:
        srawi r2, r3, 31
        and r3, r2, r3
        blr

instead of:

_test3:
        cmpwi cr0, r3, 1
        li r2, 0
        blt cr0, LBB2_2 ;entry
LBB2_1: ;entry
        mr r3, r2
LBB2_2: ;entry
        blr


This implements: PowerPC/select_lt0.ll:seli32_a_a

llvm-svn: 30517
 2006-09-20 06:41:35 +00:00