Nate Begeman
b5a0668d43
Be fruitful and multiply!
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22849 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18 00:21:41 +00:00
Jim Laskey
b454cfd453
Better version of isIntImmediate.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22848 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18 00:15:15 +00:00
Nate Begeman
26653500bb
Teach the DAG->DAG ISel about FNEG, and how it can be used to invert
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several of the PowerPC opcodes that come in both negated and non-negated
forms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22845 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 23:46:35 +00:00
Jim Laskey
b8df7c2213
Promote dependency for MathExtras.h out of Constants.h.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22839 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 20:04:34 +00:00
Jim Laskey
cb6682fa44
Culling out use of unions for converting FP to bits and vice versa.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22838 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17 19:34:49 +00:00
Chris Lattner
8482dd894d
add a beta option for turning on dag->dag isel
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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
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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
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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,
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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
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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.
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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
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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
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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.
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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:
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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
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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
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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
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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
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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.
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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.
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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
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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
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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
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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)
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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
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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
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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
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(~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
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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
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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
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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.
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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
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(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
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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
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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.
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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.
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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
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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
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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
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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.
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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.
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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.
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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
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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.
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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