maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
345,659 Commits 23 Branches 0 Tags 2.2 GiB
Commit Graph

13 Commits

Author SHA1 Message Date
Sagar Jain 76cf14035b [MLIR] Added llvm.fence 
This patch adds llvm.fence. I tried not to change the syntax much.

syntax:

LLVM IR
`fence [syncscope("<target-scope>")] <ordering>`

MLIR LLVM Dialect

`llvm.fence [syncscope("<target-scope>")] <ordering>`

example:
LLVM IR: `fence syncscope("agent") seq_cst`
MLIR: `llvm.fence syncscope("agent") seq_cst`

Differential Revision: https://reviews.llvm.org/D75645
 2020-03-17 17:53:37 +01:00
Sagar Jain d85821dfa6 [MLIR] Added llvm.freeze 
This patch adds llvm.freeze & processes undef constants from LLVM IR.

Syntax:
LLVM IR
`<result> = freeze ty <val>`

MLIR LLVM Dialect:
`llvm.freeze val attr-dict : type`

Example:
LLVM IR: `%3 = freeze i32 5`
MLIR: `%6 = llvm.freeze %5 : !llvm.i32`

Differential Revision: https://reviews.llvm.org/D75329
 2020-03-02 10:24:01 +01:00
Shraiysh Vaishay d242aa245c [MLIR] Added llvm.invoke and llvm.landingpad 
Summary:
I have tried to implement `llvm.invoke` and `llvm.landingpad`.

  # `llvm.invoke` is similar to `llvm.call` with two successors added, the first one is the normal label and the second one is unwind label.
  # `llvm.launchpad` takes a variable number of args with either `catch` or `filter` associated with them. Catch clauses are not array types and filter clauses are array types. This is same as the criteria used by LLVM (4f82af81a0/llvm/include/llvm/IR/Instructions.h (L2866))

Examples:
LLVM IR
```
define i32 @caller(i32 %a) personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
    invoke i32 @foo(i32 2) to label %success unwind label %fail

  success:
    ret i32 2

  fail:
    landingpad {i8*, i32} catch i8** @_ZTIi catch i8** null catch i8* bitcast (i8** @_ZTIi to i8*) filter [1 x i8] [ i8 1 ]
    ret i32 3
}
```
MLIR LLVM Dialect
```
llvm.func @caller(%arg0: !llvm.i32) -> !llvm.i32 {
  %0 = llvm.mlir.constant(3 : i32) : !llvm.i32
  %1 = llvm.mlir.constant("\01") : !llvm<"[1 x i8]">
  %2 = llvm.mlir.addressof @_ZTIi : !llvm<"i8**">
  %3 = llvm.bitcast %2 : !llvm<"i8**"> to !llvm<"i8*">
  %4 = llvm.mlir.null : !llvm<"i8**">
  %5 = llvm.mlir.addressof @_ZTIi : !llvm<"i8**">
  %6 = llvm.mlir.constant(2 : i32) : !llvm.i32
  %7 = llvm.invoke @foo(%6) to ^bb1 unwind ^bb2 : (!llvm.i32) -> !llvm.i32
^bb1:	// pred: ^bb0
  llvm.return %6 : !llvm.i32
^bb2:	// pred: ^bb0
  %8 = llvm.landingpad (catch %5 : !llvm<"i8**">) (catch %4 : !llvm<"i8**">) (catch %3 : !llvm<"i8*">) (filter %1 : !llvm<"[1 x i8]">) : !llvm<"{ i8*, i32 }">
  llvm.return %0 : !llvm.i32
}
```

Signed-off-by: Shraiysh Vaishay <cs17btech11050@iith.ac.in>

Differential Revision: https://reviews.llvm.org/D72006
 2020-01-30 12:55:28 +01:00
Frank Laub fffea2842d [MLIR] LLVM Dialect: add llvm.cmpxchg and improve llvm.atomicrmw custom parser 
Summary:
Add a `llvm.cmpxchg` op as a counterpart to LLVM IR's `cmpxchg` instruction.
Note that the `weak`, `volatile`, and `syncscope` attributes are not yet supported.

This will be useful for upcoming parallel versions of affine.for and generally
for reduction-like semantics (especially for reductions that can't make use
of `atomicrmw`, e.g. `fmax`).

Reviewers: ftynse, nicolasvasilache

Reviewed By: ftynse

Subscribers: merge_guards_bot, jfb, mehdi_amini, rriddle, jpienaar, burmako, shauheen, antiagainst, arpith-jacob, mgester, lucyrfox, liufengdb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D72995
 2020-01-21 01:09:42 -08:00
Frank Laub 60a0c612df [MLIR] LLVM dialect: Add llvm.atomicrmw 
Summary:
This op is the counterpart to LLVM's atomicrmw instruction. Note that
volatile and syncscope attributes are not yet supported.

This will be useful for upcoming parallel versions of `affine.for` and generally
for reduction-like semantics.

Differential Revision: https://reviews.llvm.org/D72741
 2020-01-17 21:17:14 +01:00
MLIR Team 1012c492f0 Allow LLVM::ExtractElementOp to have non-i32 indices. 
Also change the text format a bit, so that indices are braced by squares.

PiperOrigin-RevId: 282437095
 2019-11-25 14:44:52 -08:00
Eric Schweitz 0d545921ea Add support for the LLVM FNeg instruction 
Closes tensorflow/mlir#216

COPYBARA_INTEGRATE_REVIEW=https://github.com/tensorflow/mlir/pull/216 from schweitzpgi:llvmir-fneg-op f9b5f185845d671b745ab6fc213d5d9aff044b34
PiperOrigin-RevId: 278795325
 2019-11-06 00:02:10 -08:00
James Molloy 96531e2f87 [mlir][llvm] Add missing cast ops 
Also adds a builder method for fcmp, identical to that for icmp.

PiperOrigin-RevId: 277923158
 2019-11-01 07:32:09 -07:00
Kazuaki Ishizaki f28c5aca17 Fix minor spelling tweaks (NFC) 
Closes tensorflow/mlir#175

PiperOrigin-RevId: 275726876
 2019-10-20 09:44:36 -07:00
Lei Zhang 057dc41bf6 Allow '_' when pretty printing dialect symbols 
'_' is used frequently enough as the separator of words in symbols.
We should allow it in dialect symbols when considering pretty printing.

Also updated LangRef.md regarding pretty form.

PiperOrigin-RevId: 275312494
 2019-10-17 12:24:18 -07:00
Eric Schweitz a3d084848d Add LLVM IR dialect hooks for FP128 and X86_FP80 types 
Closes tensorflow/mlir#184

COPYBARA_INTEGRATE_REVIEW=https://github.com/tensorflow/mlir/pull/184 from schweitzpgi:more-float-types ca27d00510a86ffc9c79c65fb3a0193b5ea097a0
PiperOrigin-RevId: 274288813
 2019-10-11 18:35:33 -07:00
Alex Zinenko 71b82bcbf6 LLVM Dialect: introduce llvm.mlir.null operation 
Similarly to `llvm.mlir.undef`, this auxiliary operation creates an SSA value
that corresponds to `null` in LLVM IR.  This operation is necessary to model
sizeof(<...>) behavior when allocating memory.

PiperOrigin-RevId: 274158760
 2019-10-11 06:32:24 -07:00
Alex Zinenko c6f8adad8e Move LLVMIR dialect tests from test/LLVMIR to test/Dialect and test/Conversion 
This follows up on the recent restructuring that moved the dialects under
lib/Dialect and inter-dialect conversions to lib/Conversion. Originally, the
tests for both the LLVMIR dialect itself and the conversion from Standard to
LLVMIR dialect lived under test/LLVMIR.  This no longer reflects the code
structure.  Move the tests to either test/Dialect/LLVMIR or
test/Conversion/StandardToLLVM depending on the features they exercise.

PiperOrigin-RevId: 267159219
 2019-09-04 08:38:18 -07:00