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3543 Commits

Author SHA1 Message Date
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
Chris Lattner
8746e2cd57 Fold the full generality of (any_extend (truncate x)) 
llvm-svn: 30514
 2006-09-20 06:29:17 +00:00
Chris Lattner
8b68decb27 Two things: 
1. teach SimplifySetCC that '(srl (ctlz x), 5) == 0' is really x != 0.
2. Teach visitSELECT_CC to use SimplifySetCC instead of calling it and
   ignoring the result.  This allows us to compile:

bool %test(ulong %x) {
  %tmp = setlt ulong %x, 4294967296
  ret bool %tmp
}

to:

_test:
        cntlzw r2, r3
        cmplwi cr0, r3, 1
        srwi r2, r2, 5
        li r3, 0
        beq cr0, LBB1_2 ;
LBB1_1: ;
        mr r3, r2
LBB1_2: ;
        blr

instead of:

_test:
        addi r2, r3, -1
        cntlzw r2, r2
        cntlzw r3, r3
        srwi r2, r2, 5
        cmplwi cr0, r2, 0
        srwi r2, r3, 5
        li r3, 0
        bne cr0, LBB1_2 ;
LBB1_1: ;
        mr r3, r2
LBB1_2: ;
        blr

This isn't wonderful, but it's an improvement.

llvm-svn: 30513
 2006-09-20 06:19:26 +00:00
Chris Lattner
875ea0cdbd Expand 64-bit shifts more optimally if we know that the high bit of the 
shift amount is one or zero.  For example, for:

long long foo1(long long X, int C) {
  return X << (C|32);
}

long long foo2(long long X, int C) {
  return X << (C&~32);
}

we get:

_foo1:
        movb $31, %cl
        movl 4(%esp), %edx
        andb 12(%esp), %cl
        shll %cl, %edx
        xorl %eax, %eax
        ret
_foo2:
        movb $223, %cl
        movl 4(%esp), %eax
        movl 8(%esp), %edx
        andb 12(%esp), %cl
        shldl %cl, %eax, %edx
        shll %cl, %eax
        ret

instead of:

_foo1:
        subl $4, %esp
        movl %ebx, (%esp)
        movb $32, %bl
        movl 8(%esp), %eax
        movl 12(%esp), %edx
        movb %bl, %cl
        orb 16(%esp), %cl
        shldl %cl, %eax, %edx
        shll %cl, %eax
        xorl %ecx, %ecx
        testb %bl, %bl
        cmovne %eax, %edx
        cmovne %ecx, %eax
        movl (%esp), %ebx
        addl $4, %esp
        ret
_foo2:
        subl $4, %esp
        movl %ebx, (%esp)
        movb $223, %cl
        movl 8(%esp), %eax
        movl 12(%esp), %edx
        andb 16(%esp), %cl
        shldl %cl, %eax, %edx
        shll %cl, %eax
        xorl %ecx, %ecx
        xorb %bl, %bl
        testb %bl, %bl
        cmovne %eax, %edx
        cmovne %ecx, %eax
        movl (%esp), %ebx
        addl $4, %esp
        ret

llvm-svn: 30506
 2006-09-20 03:38:48 +00:00
Chris Lattner
698000b0da Fix UnitTests/2005-05-12-Int64ToFP.c with llc-beta. In particular, do not 
allow it to go into an infinite loop, filling up the disk!

llvm-svn: 30494
 2006-09-19 18:02:01 +00:00
Chris Lattner
5a42ebcff3 Fold extract_element(cst) to cst 
llvm-svn: 30478
 2006-09-19 05:02:39 +00:00
Chris Lattner
4c059f4962 Minor speedup for legalize by avoiding some malloc traffic 
llvm-svn: 30477
 2006-09-19 04:51:23 +00:00
Evan Cheng
1fc7c363e6 Fix a typo. 
llvm-svn: 30474
 2006-09-18 23:28:33 +00:00
Evan Cheng
4bfaf0bd2c Allow i32 UDIV, SDIV, UREM, SREM to be expanded into libcalls. 
llvm-svn: 30470
 2006-09-18 21:49:04 +00:00
Andrew Lenharth
51ad73c98c oops 
llvm-svn: 30462
 2006-09-18 18:00:18 +00:00
Andrew Lenharth
c50458fb90 absolute addresses must match pointer size 
llvm-svn: 30461
 2006-09-18 17:59:35 +00:00
Jim Laskey
d30bba331f Sort out mangled names for globals 
llvm-svn: 30460
 2006-09-18 14:47:26 +00:00
Chris Lattner
e50f5d1fb1 Oh yeah, this is needed too 
llvm-svn: 30407
 2006-09-16 05:08:34 +00:00
Chris Lattner
1b63391fdf simplify control flow, no functionality change 
llvm-svn: 30403
 2006-09-16 00:21:44 +00:00
Chris Lattner
fbadbda6ba Allow custom expand of mul 
llvm-svn: 30402
 2006-09-16 00:09:24 +00:00
Chris Lattner
8fb3d445f5 Keep track of the start of MBB's in a separate map from instructions. This 
is faster and is needed for future improvements.

llvm-svn: 30383
 2006-09-15 03:57:23 +00:00