8be5be817c
Implement an annoying part of the Darwin/X86 abi: the callee of a struct
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return argument pops the hidden struct pointer if present, not the caller.
For example, in this testcase:
struct X { int D, E, F, G; };
struct X bar() {
struct X a;
a.D = 0;
a.E = 1;
a.F = 2;
a.G = 3;
return a;
}
void foo(struct X *P) {
*P = bar();
}
We used to emit:
_foo:
subl $28, %esp
movl 32(%esp), %eax
movl %eax, (%esp)
call _bar
addl $28, %esp
ret
_bar:
movl 4(%esp), %eax
movl $0, (%eax)
movl $1, 4(%eax)
movl $2, 8(%eax)
movl $3, 12(%eax)
ret
This is correct on Linux/X86 but not Darwin/X86. With this patch, we now
emit:
_foo:
subl $28, %esp
movl 32(%esp), %eax
movl %eax, (%esp)
call _bar
*** addl $24, %esp
ret
_bar:
movl 4(%esp), %eax
movl $0, (%eax)
movl $1, 4(%eax)
movl $2, 8(%eax)
movl $3, 12(%eax)
*** ret $4
For the record, GCC emits (which is functionally equivalent to our new code):
_bar:
movl 4(%esp), %eax
movl $3, 12(%eax)
movl $2, 8(%eax)
movl $1, 4(%eax)
movl $0, (%eax)
ret $4
_foo:
pushl %esi
subl $40, %esp
movl 48(%esp), %esi
leal 16(%esp), %eax
movl %eax, (%esp)
call _bar
subl $4, %esp
movl 16(%esp), %eax
movl %eax, (%esi)
movl 20(%esp), %eax
movl %eax, 4(%esi)
movl 24(%esp), %eax
movl %eax, 8(%esi)
movl 28(%esp), %eax
movl %eax, 12(%esi)
addl $40, %esp
popl %esi
ret
This fixes SingleSource/Benchmarks/CoyoteBench/fftbench with LLC and the
JIT, and fixes the X86-backend portion of PR729. The CBE still needs to
be updated.
llvm-svn: 28438
2006-05-23 18:50:38 +00:00
8c6b234ce8
Should pass by reference.
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llvm-svn: 28357
2006-05-17 19:07:40 +00:00
48940d16b2
- Clean up formal argument lowering code. Prepare for vector pass by value work.
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- Fixed vararg support.
llvm-svn: 27985
2006-04-27 01:32:22 +00:00
e0bcfbe811
Switching over FORMAL_ARGUMENTS mechanism to lower call arguments.
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llvm-svn: 27975
2006-04-26 01:20:17 +00:00
a9467aab0a
Separate LowerOperation() into multiple functions, one per opcode.
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llvm-svn: 27972
2006-04-25 20:13:52 +00:00
e8b5180044
Now generating perfect (I think) code for "vector set" with a single non-zero
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scalar value.
e.g.
_mm_set_epi32(0, a, 0, 0);
==>
movd 4(%esp), %xmm0
pshufd $69, %xmm0, %xmm0
_mm_set_epi8(0, 0, 0, 0, 0, a, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
==>
movzbw 4(%esp), %ax
movzwl %ax, %eax
pxor %xmm0, %xmm0
pinsrw $5, %eax, %xmm0
llvm-svn: 27923
2006-04-21 01:05:10 +00:00
60f0b8998e
- Added support to turn "vector clear elements", e.g. pand V, <-1, -1, 0, -1>
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to a vector shuffle.
- VECTOR_SHUFFLE lowering change in preparation for more efficient codegen
of vector shuffle with zero (or any splat) vector.
llvm-svn: 27875
2006-04-20 08:58:49 +00:00
7855e4d032
Commute vector_shuffle to match more movlhps, movlp{s|d} cases.
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llvm-svn: 27840
2006-04-19 20:35:22 +00:00
5d247f81c1
Last few SSE3 intrinsics.
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llvm-svn: 27711
2006-04-14 21:59:03 +00:00
12ba3e23d0
Added support for _mm_move_ss and _mm_move_sd.
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llvm-svn: 27575
2006-04-11 00:19:04 +00:00
c995b45f67
- movlp{s|d} and movhp{s|d} support.
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- Normalize shuffle nodes so result vector lower half elements come from the
first vector, the rest come from the second vector. (Except for the
exceptions :-).
- Other minor fixes.
llvm-svn: 27474
2006-04-06 23:23:56 +00:00
780382946e
Support for comi / ucomi intrinsics.
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llvm-svn: 27444
2006-04-05 23:38:46 +00:00
f3b52c84ea
Handle canonical form of e.g.
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vector_shuffle v1, v1, <0, 4, 1, 5, 2, 6, 3, 7>
This is turned into
vector_shuffle v1, <undef>, <0, 0, 1, 1, 2, 2, 3, 3>
by dag combiner.
It would match a {p}unpckl on x86.
llvm-svn: 27437
2006-04-05 07:20:06 +00:00
5fd7c69473
Use a X86 target specific node X86ISD::PINSRW instead of a mal-formed
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INSERT_VECTOR_ELT to insert a 16-bit value in a 128-bit vector.
llvm-svn: 27314
2006-03-31 21:55:24 +00:00
cbffa4656b
Add support to use pextrw and pinsrw to extract and insert a word element
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from a 128-bit vector.
llvm-svn: 27304
2006-03-31 19:22:53 +00:00
b7fedffc78
- Added some SSE2 128-bit packed integer ops.
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- Added SSE2 128-bit integer pack with signed saturation ops.
- Added pshufhw and pshuflw ops.
llvm-svn: 27252
2006-03-29 23:07:14 +00:00
1a194a5264
* Prefer using operation of matching types. e.g unpcklpd rather than movlhps.
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* Bug fixes.
llvm-svn: 27218
2006-03-28 06:50:32 +00:00
2bc3280659
- Clean up / consoladate various shuffle masks.
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- Some misc. bug fixes.
- Use MOVHPDrm to load from m64 to upper half of a XMM register.
llvm-svn: 27210
2006-03-28 02:43:26 +00:00
5df75889db
Model unpack lower and interleave as vector_shuffle so we can lower the
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intrinsics as such.
llvm-svn: 27200
2006-03-28 00:39:58 +00:00
ed6184aef2
Remove X86:isZeroVector, use ISD::isBuildVectorAllZeros instead; some fixes / cleanups
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llvm-svn: 27150
2006-03-26 09:53:12 +00:00
2bc0941e2a
Build arbitrary vector with more than 2 distinct scalar elements with a
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series of unpack and interleave ops.
llvm-svn: 27119
2006-03-25 09:37:23 +00:00
e7ee6a5e32
Support for scalar to vector with zero extension.
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llvm-svn: 27091
2006-03-24 23:15:12 +00:00
082c8785ef
Handle BUILD_VECTOR with all zero elements.
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llvm-svn: 27056
2006-03-24 07:29:27 +00:00
2595a687da
More efficient v2f64 shuffle using movlhps, movhlps, unpckhpd, and unpcklpd.
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llvm-svn: 27040
2006-03-24 02:58:06 +00:00
d27fb3e85e
Handle more shuffle cases with SHUFP* instructions.
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llvm-svn: 27024
2006-03-24 01:18:28 +00:00
021bb7c956
Added a ValueType operand to isShuffleMaskLegal(). For now, x86 will not do
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64-bit vector shuffle.
llvm-svn: 26964
2006-03-22 22:07:06 +00:00
68ad48bd1a
- Implement X86ISelLowering::isShuffleMaskLegal(). We currently only support
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splat and PSHUFD cases.
- Clean up shuffle / splat matching code.
llvm-svn: 26954
2006-03-22 18:59:22 +00:00
8fdbdf20cd
- VECTOR_SHUFFLE of v4i32 / v4f32 with undef second vector always matches
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PSHUFD. We can make permutes entries which point to the undef pointing
anything we want.
- Change some names to appease Chris.
llvm-svn: 26951
2006-03-22 08:01:21 +00:00
d097e67544
Some splat and shuffle support.
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llvm-svn: 26940
2006-03-22 02:53:00 +00:00
d5e905d762
- Use movaps to store 128-bit vector integers.
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- Each scalar to vector v8i16 and v16i8 is a any_extend followed by a movd.
llvm-svn: 26932
2006-03-21 23:01:21 +00:00
2dd2c652b2
Added getTargetLowering() to TargetMachine. Refactored targets to support this.
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llvm-svn: 26742
2006-03-13 23:20:37 +00:00
e0ed6ec13f
- Clean up the lowering and selection code of ConstantPool, GlobalAddress,
...
and ExternalSymbol.
- Use C++ code (rather than tblgen'd selection code) to match the above
mentioned leaf nodes. Do not mutate and nodes and do not record the
selection in CodeGenMap. These nodes should be safe to duplicate. This is
a performance win.
llvm-svn: 26335
2006-02-23 20:41:18 +00:00
1f342c2884
PIC related bug fixes.
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1. Various asm printer bug.
2. Lowering bug. Now TargetGlobalAddress is wrapped in X86ISD::TGAWrapper.
llvm-svn: 26324
2006-02-23 02:43:52 +00:00
7ad77dfc2a
split register class handling from explicit physreg handling.
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llvm-svn: 26308
2006-02-22 00:56:39 +00:00
7bb4696dc3
Updates to match change of getRegForInlineAsmConstraint prototype
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llvm-svn: 26305
2006-02-21 23:11:00 +00:00
5588de9415
x86 / Darwin PIC support.
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llvm-svn: 26273
2006-02-18 00:15:05 +00:00
5965bd19f8
kill ADD_PARTS & SUB_PARTS and replace them with fancy new ADDC, ADDE, SUBC
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and SUBE nodes that actually expose what's going on and allow for
significant simplifications in the targets.
llvm-svn: 26255
2006-02-17 05:43:56 +00:00
8a77efe4f7
Rework the SelectionDAG-based implementations of SimplifyDemandedBits
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and ComputeMaskedBits to match the new improved versions in instcombine.
Tested against all of multisource/benchmarks on ppc.
llvm-svn: 26238
2006-02-16 21:11:51 +00:00
11613a5219
Separate FILD and FILD_FLAG, the later is only used for SSE2. It produces a
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flag so it can be flagged to a FST.
llvm-svn: 25953
2006-02-04 02:20:30 +00:00
72d5c256c9
- Allow XMM load (for scalar use) to be folded into ANDP* and XORP*.
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- Use XORP* to implement fneg.
llvm-svn: 25857
2006-01-31 22:28:30 +00:00
c642aa5e1c
* Fix 80-column violations
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* Rename hasSSE -> hasSSE1 to avoid my continual confusion with 'has any SSE'.
* Add inline asm constraint specification.
llvm-svn: 25854
2006-01-31 19:43:35 +00:00
2dd217b88f
Added custom lowering of fabs
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llvm-svn: 25831
2006-01-31 03:14:29 +00:00
5b97fcf0f5
Always use FP stack instructions to perform i64 to f64 as well as f64 to i64
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conversions. SSE does not have instructions to handle these tasks.
llvm-svn: 25817
2006-01-30 08:02:57 +00:00
f0b24d2dc0
Move MaskedValueIsZero from the DAGCombiner to the TargetLowering interface,making isMaskedValueZeroForTargetNode simpler, and useable from other partsof the compiler.
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llvm-svn: 25803
2006-01-30 04:09:27 +00:00
c6fa0282d2
adjust prototype
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llvm-svn: 25798
2006-01-30 03:49:07 +00:00
8c47c3a3b1
Remove TLI.LowerReturnTo, and just let targets custom lower ISD::RET for
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the same functionality. This addresses another piece of bug 680. Next,
on to fixing Alpha VAARG, which I broke last time.
llvm-svn: 25696
2006-01-27 21:09:22 +00:00
cde9e30bc6
x86 CPU detection and proper subtarget support
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llvm-svn: 25679
2006-01-27 08:10:46 +00:00
e74795cd70
First part of bug 680:
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Remove TLI.LowerVA* and replace it with SDNodes that are lowered the same
way as everything else.
llvm-svn: 25606
2006-01-25 18:21:52 +00:00
6305e50ee1
Fix sint_to_fp (fild*) support.
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llvm-svn: 25257
2006-01-12 22:54:21 +00:00
ae986f1f1e
Support for MEMCPY and MEMSET.
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llvm-svn: 25226
2006-01-11 22:15:48 +00:00
339edad775
SSE cmov support.
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llvm-svn: 25190
2006-01-11 00:33:36 +00:00
9c249c37f8
Support for ADD_PARTS, SUB_PARTS, SHL_PARTS, SHR_PARTS, and SRA_PARTS.
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llvm-svn: 25158
2006-01-09 18:33:28 +00:00
172fce7050
* Fast call support.
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* FP cmp, setcc, etc.
llvm-svn: 25117
2006-01-06 00:43:03 +00:00
45e19098a6
DAG based isel call support.
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llvm-svn: 25103
2006-01-05 00:27:02 +00:00
5c59d49630
More X86 floating point patterns.
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llvm-svn: 24990
2005-12-23 07:31:11 +00:00
9cdc16c6d3
* Fix a GlobalAddress lowering bug.
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* Teach DAG combiner about X86ISD::SETCC by adding a TargetLowering hook.
llvm-svn: 24921
2005-12-21 23:05:39 +00:00
c1583dbd63
* Added support for X86 RET with an additional operand to specify number of
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bytes to pop off stack.
* Added support for X86 SETCC.
llvm-svn: 24917
2005-12-21 20:21:51 +00:00
a74ce62746
* Added lowering hook for external weak global address. It inserts a load
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for Darwin.
* Added lowering hook for ISD::RET. It inserts CopyToRegs for the return
value (or store / fld / copy to ST(0) for floating point value). This
eliminate the need to write C++ code to handle RET with variable number
of operands.
llvm-svn: 24888
2005-12-21 02:39:21 +00:00
6af02635a7
Added a hook to print out names of target specific DAG nodes.
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llvm-svn: 24877
2005-12-20 06:22:03 +00:00
6fc31046aa
X86 conditional branch support.
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llvm-svn: 24870
2005-12-19 23:12:38 +00:00
225a4d0d6d
X86 lowers SELECT to a cmp / test followed by a conditional move.
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llvm-svn: 24754
2005-12-17 01:21:05 +00:00
0bf68ae434
The second patch of X86 support for read cycle counter.
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llvm-svn: 24430
2005-11-20 21:41:10 +00:00
76ac068568
Separate X86ISelLowering stuff out from the X86ISelPattern.cpp file. Patch
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contributed by Evan Cheng.
llvm-svn: 24358
2005-11-15 00:40:23 +00:00
Chris Lattner