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8482dd894d
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4057 Commits

Author SHA1 Message Date
Chris Lattner
8482dd894d add a beta option for turning on dag->dag isel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22837 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 19:33:30 +00:00
Chris Lattner
a5a91b1026 initial hack at a dag->dag instruction selector. This is obviously woefully 
incomplete, but it is a start.  It handles basic argument/retval stuff, immediates,
add and sub.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22836 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 19:33:03 +00:00
Chris Lattner
d1c4626e14 add prototype, remove dead proto 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22835 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 19:32:03 +00:00
Chris Lattner
9d6c45bdd7 Fix some bugs in the alpha backend, some of which I introduced yesterday, 
and some that were preexisting.  All alpha regtests pass now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22829 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 17:08:24 +00:00
Chris Lattner
6d9aed4f8f Fix a few small typos I noticed when converting this over to the DAG->DAG 
selector.  Also, there is no difference between addSImm and addImm, so just
use addImm, folding some branches.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22819 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 01:25:14 +00:00
Jim Laskey
a033b4d8eb Removed UINT_TO_FP and SINT_TO_FP from ISel outright. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22818 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 01:14:38 +00:00
Andrew Lenharth
035b8abdab thinko. Should fix s4addl.ll regression 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22817 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 00:47:24 +00:00
Jim Laskey
361ca5c927 Remove ISel code generation for UINT_TO_FP and SINT_TO_FP. Now asserts if 
marked as legal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22816 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 00:41:40 +00:00
Jim Laskey
ad23c9d4f2 Make UINT_TO_FP and SINT_TO_FP use generic expansion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22815 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 00:40:22 +00:00
Nate Begeman
456f1e890c Implement a couple improvements: 
Remove dead code in ISD::Constant handling
Add support for add long, imm16

We now codegen 'long long foo(long long a) { return ++a; }'
as:
addic r4, r4, 1
addze r3, r3
blr

instead of:
li r2, 1
li r5, 0
addc r2, r4, r2
adde r3, r3, r5
blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22811 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-17 00:20:08 +00:00
Chris Lattner
a8cd01524f updates for changes in nodes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22808 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-16 21:58:15 +00:00
Chris Lattner
707ebc5dd6 update the backends to work with the new CopyFromReg/CopyToReg/ImplicitDef nodes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22807 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-16 21:56:37 +00:00
Nate Begeman
7cbd525ba8 Implement BR_CC and BRTWOWAY_CC. This allows the removal of a rather nasty 
fixme from the PowerPC backend.  Emit slightly better code for legalizing
select_cc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22805 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-16 19:49:35 +00:00
Chris Lattner
7c5a3d390a Pull the LLVM -> DAG lowering code out of the pattern selector so that it 
can be shared with the DAG->DAG selector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22799 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-16 17:14:42 +00:00
Chris Lattner
b0096bd19d Turn loop strength reduction on by default. 
Only run createLowerConstantExpressionsPass for the simple isel.  The DAG
isel has no need for it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22794 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-15 23:47:04 +00:00
Jim Laskey
ea0617a023 Broke 80 column rule. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22792 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-15 17:35:26 +00:00
Jim Laskey
30679e691d Changed code gen for int to f32 to use rounding. This makes FP results 
consistent with gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22791 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-15 17:14:19 +00:00
Andrew Lenharth
d228427f87 isIntImmediate is a good Idea. Add a flavor that checks bounds while it is at it 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22790 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-15 14:31:37 +00:00
Nate Begeman
2d56e72f09 Fix last night's PPC32 regressions by 
1. Not selecting the false value of a select_cc in the false arm, which
   isn't legal for nested selects.
2. Actually returning the node we created and Legalized in the FP_TO_UINT
   Expander.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22789 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-14 18:38:32 +00:00
Nate Begeman
889f2c1acf Fix last night's X86 regressions by putting code for SSE in the if(SSE) 
block.  nur.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22788 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-14 18:37:02 +00:00
Nate Begeman
875f360e22 Fix FP_TO_UINT with Scalar SSE2 now that the legalizer can handle it. We 
now generate the relatively good code sequences:
unsigned short foo(float a) { return a; }
_foo:
        movss 4(%esp), %xmm0
        cvttss2si %xmm0, %eax
        movzwl %ax, %eax
        ret

and
unsigned bar(float a) { return a; }
_bar:
        movss .CPI_bar_0, %xmm0
        movss 4(%esp), %xmm1
        movapd %xmm1, %xmm2
        subss %xmm0, %xmm2
        cvttss2si %xmm2, %eax
        xorl $-2147483648, %eax
        cvttss2si %xmm1, %ecx
        ucomiss %xmm0, %xmm1
        cmovb %ecx, %eax
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22786 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-14 04:36:51 +00:00
Nate Begeman
5a01481585 Make FP_TO_UINT Illegal. This allows us to generate significantly better 
codegen for FP_TO_UINT by using the legalizer's SELECT variant.

Implement a codegen improvement for SELECT_CC, selecting the false node in
the MBB that feeds the phi node.  This allows us to codegen:
void foo(int *a, int b, int c) { int d = (a < b) ? 5 : 9; *a = d; }
as:
_foo:
        li r2, 5
        cmpw cr0, r4, r3
        bgt .LBB_foo_2  ; entry
.LBB_foo_1:     ; entry
        li r2, 9
.LBB_foo_2:     ; entry
        stw r2, 0(r3)
        blr

insted of:
_foo:
        li r2, 5
        li r5, 9
        cmpw cr0, r4, r3
        bgt .LBB_foo_2  ; entry
.LBB_foo_1:     ; entry
        or r2, r5, r5
.LBB_foo_2:     ; entry
        stw r2, 0(r3)
        blr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22784 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-14 01:17:16 +00:00
Nate Begeman
8f331325a2 Remove support for 64b PPC, it's been broken for a long time. It'll be 
back once a DAG->DAG ISel exists.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22778 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-13 05:59:16 +00:00
Jim Laskey
cf083e312c Fix for 2005-08-12-rlwimi-crash.ll. Make allowance for masks being shifted to 
zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22773 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-12 23:52:46 +00:00
Jim Laskey
847c3a976b 1. This changes handles the cases of (~x)&y and x&(~y) yielding ANDC, and 
(~x)|y and x|(~y) yielding ORC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22771 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-12 23:38:02 +00:00
Andrew Lenharth
1f3e808ebf match gcc's use of tabs, makes diffs easier 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22764 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-12 16:14:08 +00:00
Andrew Lenharth
21e786bdb4 .section cleanup, patch from Nicholas Riley 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22763 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-12 16:13:43 +00:00
Jim Laskey
191cf943e6 1. Added the function isOpcWithIntImmediate to simplify testing of operand with 
specified opcode and an integer constant right operand.

2. Modified ISD::SHL, ISD::SRL, ISD::SRA to use rlwinm when applied after a mask.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22761 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-11 21:59:23 +00:00
Chris Lattner
2b48bc6f95 Tidied up the use of dyn_cast<ConstantSDNode> by using isIntImmediate more. 
Patch by Jim Laskey.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22760 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-11 17:56:50 +00:00
Chris Lattner
54abfc5ee4 Use a more efficient method of creating integer and float virtual registers 
(avoids an extra level of indirection in MakeReg).

  defined MakeIntReg using RegMap->createVirtualRegister(PPC32::GPRCRegisterClass)
  defined MakeFPReg using RegMap->createVirtualRegister(PPC32::FPRCRegisterClass)

  s/MakeReg(MVT::i32)/MakeIntReg/
  s/MakeReg(MVT::f64)/MakeFPReg/

Patch by Jim Laskey!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22759 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-11 17:15:31 +00:00
Nate Begeman
c24d484b78 Make SELECT illegal on PPC32, switch to using SELECT_CC, which more closely 
reflects what the hardware is capable of.  This significantly simplifies
the CC handling logic throughout the ISel.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22756 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-10 20:52:09 +00:00
Chris Lattner
b4138c475e Changes for PPC32ISelPattern.cpp 
1. Clean up how SelectIntImmediateExpr handles use counts.
2. "Subtract from" was not clearing hi 16 bits.

Patch by Jim Laskey


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22754 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-10 18:11:33 +00:00
Chris Lattner
df706e3f0c Changed the XOR case to use the isOprNot predicate. 
Patch by Jim Laskey!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22750 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-10 16:35:46 +00:00
Chris Lattner
0d7d99fd44 1. Refactored handling of integer immediate values for add, or, xor and sub. 
New routine: ISel::SelectIntImmediateExpr
  2. Now checking use counts of large constants.  If use count is > 2 then drop
  thru so that the constant gets loaded into a register.
  Source:

int %test1(int %a) {
entry:
       %tmp.1 = add int %a,      123456789      ; <int> [#uses=1]
       %tmp.2 = or  int %tmp.1,  123456789      ; <int> [#uses=1]
       %tmp.3 = xor int %tmp.2,  123456789      ; <int> [#uses=1]
       %tmp.4 = sub int %tmp.3, -123456789      ; <int> [#uses=1]
       ret int %tmp.4
}

Did Emit:

       .machine ppc970


       .text
       .align  2
       .globl  _test1
_test1:
.LBB_test1_0:   ; entry
       addi r2, r3, -13035
       addis r2, r2, 1884
       ori r2, r2, 52501
       oris r2, r2, 1883
       xori r2, r2, 52501
       xoris r2, r2, 1883
       addi r2, r2, 52501
       addis r3, r2, 1883
       blr


Now Emits:

       .machine ppc970


       .text
       .align  2
       .globl  _test1
_test1:
.LBB_test1_0:   ; entry
       lis r2, 1883
       ori r2, r2, 52501
       add r3, r3, r2
       or r3, r3, r2
       xor r3, r3, r2
       add r3, r3, r2
       blr

Patch by Jim Laskey!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22749 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-10 16:34:52 +00:00
Duraid Madina
d2ff5ef654 sorry!! this is temporary; for some reason the nasty constmul code seems to 
be an infinite loop when using g++-4.0.1*, this kills the ia64 nightly
tester. A proper fix shall be forthcoming!!! thanks for not killing me. :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22748 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-10 12:38:57 +00:00
Chris Lattner
979a21e766 Fix a bug compiling: select (i32 < i32), f32, f32 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22747 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-10 03:40:09 +00:00
Chris Lattner
c7e18a10d4 add a optimization note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22732 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-09 22:30:57 +00:00
Chris Lattner
88ac32ca26 Update the targets to the new SETCC/CondCodeSDNode interfaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22729 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-09 20:21:10 +00:00
Chris Lattner
59b21c25d4 Minor cleanup patch, no functionality changes. Written by Jim Laskey. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22727 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-09 18:29:55 +00:00
Chris Lattner
2f46055cc2 Fix CodeGen/Generic/div-neg-power-2.ll, a regression from last night. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22726 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-09 18:08:41 +00:00
Nate Begeman
d3ded2d8a7 Factor out some common code, and be smarter about when to emit load hi/lo 
code sequences.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22719 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 22:22:56 +00:00
Chris Lattner
0045776d33 Remove getImmediateForOpcode, which is now dead. 
Patch by Jim Laskey.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22716 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 21:34:13 +00:00
Chris Lattner
fd78454477 Add new immediate handling support for mul/div. 
Patch by Jim Laskey!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22715 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 21:33:23 +00:00
Chris Lattner
5b90917400 Add support for OR/XOR/SUB immediates that are handled with the new immediate 
way.  This allows ORI/ORIS pairs, for example.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22714 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 21:30:29 +00:00
Chris Lattner
2f57c4da21 Modify the ISD::AND opcode case to use new immediate constant predicates. 
Includes wider support for rotate and mask cases.

Patch by Jim Laskey.

I've requested that Jim add new regression tests the newly handled cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22712 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 21:24:57 +00:00
Chris Lattner
39c6896d22 Modify the ISD::ADD opcode case to use new immediate constant predicates. 
Includes support for 32-bit constants using addi/addis.

Patch by Jim Laskey.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22711 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 21:21:03 +00:00
Chris Lattner
8fd1980ce6 Modify existing support functions to use new immediate constant predicates. 
Patch by Jim Laskey


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22710 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 21:12:35 +00:00
Chris Lattner
cf1cf1886e Add support predicates for future immediate constant changes. 
Patch by Jim Laskey


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22709 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 21:10:27 +00:00
Chris Lattner
02efa6c140 Move IsRunOfOnes to a more logical place and rename to a proper predicate form 
(lowercase isXXX).

Patch by Jim Laskey.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22708 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 21:08:09 +00:00
Nate Begeman
394cd13ba3 Fix JIT encoding of ppc mfocrf instruction; the operands were reversed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22707 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-08 20:04:52 +00:00