https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/127823
Doing so provides stability when compiling the builtins in a mode in which
unqualified pointers may be interpreted as being in the generic address space,
such as in OpenCL 3.0.
We eventually want to provid
frasercrmck wrote:
ping, thanks
https://github.com/llvm/llvm-project/pull/125673
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@@ -46,9 +46,7 @@ _CLC_DEF _CLC_OVERLOAD __CLC_GENTYPE
__clc_hypot(__CLC_GENTYPE x,
__CLC_GENTYPE retval = __clc_sqrt(__clc_mad(fx, fx, fy * fy)) * fx_exp;
retval = (ux > PINFBITPATT_SP32 || uy == 0) ? __CLC_AS_GENTYPE(ux) : retval;
- retval = (ux == PINFBITPATT_SP32 ||
https://github.com/frasercrmck milestoned
https://github.com/llvm/llvm-project/pull/126908
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frasercrmck wrote:
/cherry-pick a2b05761724e5243056988d9d6bf1a5a94715b74
https://github.com/llvm/llvm-project/pull/126908
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https://github.com/frasercrmck updated
https://github.com/llvm/llvm-project/pull/129045
>From 4efd607ca71b91847c9271740df7aab4534fe01b Mon Sep 17 00:00:00 2001
From: Fraser Cormack
Date: Thu, 27 Feb 2025 12:48:25 +
Subject: [PATCH 1/3] [libclc] Move rsqrt to the CLC library
This also adds
@@ -0,0 +1,4 @@
+__attribute__((weak)) _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE
+__clc_rsqrt(__CLC_GENTYPE val) {
+ return __CLC_FP_LIT(1.0) / __clc_sqrt(val);
frasercrmck wrote:
Good point. Perhaps we just use the elementwise sqrt builtin. I'm not sure I
want to t
https://github.com/frasercrmck closed
https://github.com/llvm/llvm-project/pull/129045
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https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/129871
Also replace some magic constants with named ones.
Checking against FP zero and using isnan and isinf functions allows the
optimizer to create one unified @llvm.is.fpclass intrinsic. This results in
fewer
@@ -86,13 +84,10 @@ _CLC_DEF _CLC_OVERLOAD __CLC_GENTYPE
__clc_hypot(__CLC_GENTYPE x,
r = c ? s : r;
// Check for NaN
- c = __clc_isnan(x) || __clc_isnan(y);
- r = c ? __CLC_AS_GENTYPE((__CLC_ULONGN)QNANBITPATT_DP64) : r;
+ r = __clc_isnan(x) || __clc_isnan(y) ? __CLC_
@@ -46,9 +46,7 @@ _CLC_DEF _CLC_OVERLOAD __CLC_GENTYPE
__clc_hypot(__CLC_GENTYPE x,
__CLC_GENTYPE retval = __clc_sqrt(__clc_mad(fx, fx, fy * fy)) * fx_exp;
retval = (ux > PINFBITPATT_SP32 || uy == 0) ? __CLC_AS_GENTYPE(ux) : retval;
- retval = (ux == PINFBITPATT_SP32 ||
frasercrmck wrote:
It's worth noting that alive2 considers this a correct transformation for the
before/after IR, for the scalar float/double versions of __clc_frexp for amdgcn.
https://github.com/llvm/llvm-project/pull/129871
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frasercrmck wrote:
It looks that with
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33805 mesa is no
longer using the libclc headers.
https://github.com/llvm/llvm-project/pull/126908
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https://github.com/frasercrmck updated
https://github.com/llvm/llvm-project/pull/131995
>From c0eef87f4301a9725b7d81e78875a816d3cdf7cb Mon Sep 17 00:00:00 2001
From: Fraser Cormack
Date: Mon, 3 Feb 2025 16:54:17 +
Subject: [PATCH 1/2] [clang] Introduce elementwise clz/ctz builtins
These bu
@@ -1484,6 +1484,18 @@ def ElementwiseSubSat : Builtin {
let Prototype = "void(...)";
}
+def ElementwiseClz : Builtin {
+ let Spellings = ["__builtin_elementwise_clz"];
+ let Attributes = [NoThrow, Const, CustomTypeChecking, Constexpr];
+ let Prototype = "void(...)";
+}
+
https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/131995
These builtins are modeled on the clzg/ctzg builtins, which accept an optional
second argument. This second argument is returned if the first argument is 0.
>From c0eef87f4301a9725b7d81e78875a816d3cdf7cb Mo
https://github.com/frasercrmck edited
https://github.com/llvm/llvm-project/pull/130882
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frasercrmck wrote:
> This commit breaks running with clvk & Swiftshader. Not a big deal on my
> side. Just wanted to let you know.
Oh, what exactly breaks? As in wrong results?
https://github.com/llvm/llvm-project/pull/129871
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https://github.com/llvm/llvm-project/pull/132054
>From 1e16ff4926e47b6fd58761ea04ee0535d2112ae4 Mon Sep 17 00:00:00 2001
From: Fraser Cormack
Date: Wed, 19 Mar 2025 14:52:09 +
Subject: [PATCH 1/3] [libclc] Move __clc_remainder to CLC library
It was al
https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/132758
None
>From 8e2c04878b87a7da3929836df2d20c4c4c701312 Mon Sep 17 00:00:00 2001
From: Fraser Cormack
Date: Mon, 24 Mar 2025 15:28:20 +
Subject: [PATCH] [libclc] Add missing license headers to source IR fil
https://github.com/frasercrmck closed
https://github.com/llvm/llvm-project/pull/132753
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https://github.com/frasercrmck commented:
Nice one!
This appears only to fix the precision issues I see when in FTZ mode. Without
FTZ mode, I still see, e.g.,
```
1:erfc fp32 ...
ERROR: erfc: -24.674929 ulp error at 0x1.3b8p+3 (0x411dc000): *0x1.9p-145 vs.
0x0p+0
ERR
@@ -130,7 +130,8 @@ _CLC_OVERLOAD _CLC_DEF float erf(float x) {
// |x| < 6
float z = as_float(ix & 0xf000);
-float r = exp(mad(-z, z, -0.5625f)) * exp(mad(z-absx, z+absx, q));
+float r = exp(-z * z) * exp(mad(z - absx, z + absx, q));
+r *= 0x1.23ba94p-1
https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/132753
This commit moves most of the sincos helper functions to the CLC library. It
simultaneously vectorizes them with the aim to increase performance for vector
types by avoiding scalarization.
Some helpers for
https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/132918
Similar to d46a6999, this commit simultaneously moves these three functions to
the CLC library and optimizes them for vector types by avoiding scalarization.
>From 1fb1a82f1dff423d96e803889e831e8aced1aba1 M
https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/132788
This commit simultaneously moves these three functions to the CLC library and
optimizing them for vector types by avoiding scalarization.
>From 225400d9dcf9e6bcc08a0b61e062f28f6edfdda6 Mon Sep 17 00:00:00 2
https://github.com/frasercrmck approved this pull request.
LGTM
https://github.com/llvm/llvm-project/pull/130882
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@@ -342,21 +342,32 @@ function(add_libclc_builtin_set)
set( builtins_opt_lib_tgt builtins.opt.${ARG_ARCH_SUFFIX} )
- # Add opt target
- add_custom_command( OUTPUT ${builtins_opt_lib_tgt}.bc
-COMMAND ${opt_exe} ${ARG_OPT_FLAGS} -o ${builtins_opt_lib_tgt}.bc
- ${bu
@@ -46,9 +46,7 @@ _CLC_DEF _CLC_OVERLOAD __CLC_GENTYPE
__clc_hypot(__CLC_GENTYPE x,
__CLC_GENTYPE retval = __clc_sqrt(__clc_mad(fx, fx, fy * fy)) * fx_exp;
retval = (ux > PINFBITPATT_SP32 || uy == 0) ? __CLC_AS_GENTYPE(ux) : retval;
- retval = (ux == PINFBITPATT_SP32 ||
frasercrmck wrote:
ping. This PR is blocking the addition of some new elementwise builtins we want
for libclc.
https://github.com/llvm/llvm-project/pull/125673
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https://github.com/frasercrmck commented:
I think this makes sense. I can't say for sure that `opt` does absolutely
nothing when passed no arguments but logically it makes sense.
As for how targets are organized, I wonder if conditionally providing targets
adds more complexity, both for the co
frasercrmck wrote:
Am I right in thinking that CMake 3.27's `DEPENDS_EXPLICIT_ONLY` would also fix
this? If so it might be worth documenting this explicitly, both in the
PR/commit and in the code? We might be able to refactor this in the future,
when LLVM updates its minimum version to 3.27.
https://github.com/frasercrmck approved this pull request.
https://github.com/llvm/llvm-project/pull/131585
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frasercrmck wrote:
Note that this work is the result of asking the LLVM Foundation about the state
of libclc licensing, and their checking with the Foundation's IP lawyer. I've
CC'd @kbeyls for confirmation.
> I'll just put it out there since my name's on a bunch of these files and it
> might
@@ -1484,6 +1484,18 @@ def ElementwiseSubSat : Builtin {
let Prototype = "void(...)";
}
+def ElementwiseClz : Builtin {
+ let Spellings = ["__builtin_elementwise_clz"];
+ let Attributes = [NoThrow, Const, CustomTypeChecking, Constexpr];
+ let Prototype = "void(...)";
+}
+
frasercrmck wrote:
That's interesting. As I said alive2 was happy with the before/after IR diff of
the AMDGPU version of this builtin. Do you know what might be going on? Is that
the fp64 or fp32 test that's failing?
https://github.com/llvm/llvm-project/pull/129871
@@ -12519,16 +12519,13 @@ def err_builtin_is_within_lifetime_invalid_arg :
Error<
"%select{non-|function }0pointer argument to '__builtin_is_within_lifetime' "
"is not allowed">;
-def err_builtin_invalid_arg_type: Error <
- "%ordinal0 argument must be "
- "%select{a vec
https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/132054
These functions were already nominally in the CLC namespace; this commit just
formally moves them over.
Note that 'half' versions of these CLC functions are now provided. Previously
the corresponding OpenC
frasercrmck wrote:
Note that this work is the result of asking the LLVM Foundation about the state
of libclc licensing, and their checking with the Foundation's IP lawyer. I've
CC'd @kbeyls for confirmation.
https://github.com/llvm/llvm-project/pull/132070
_
https://github.com/frasercrmck closed
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frasercrmck wrote:
You're right, my mistake: even on this repo.
I was using `llvm-diff` and only checking the error code. It reports e.g.,
`function @_Z9__clc_minDv16_DhDh exists only in left module` but still returns
`0` so I missed it.
This only affects the `builtin.link.*` bytecode librari
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frasercrmck wrote:
It strikes me as a swiftshader bug. If `x` is a denormal/subnormal number and
it is being untouched by this function and really reaching this comparison as
`0x1.008p-140` then I don't believe it should ever compare true against `0.0`.
My reading of flush-to-zero
([here](htt
https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/132213
Similar to work done in 82912fd6, this commit re-licenses both the
gen_convert.py script, and the it generates.
It previously possessed an MIT license, with three additional individual
copyrights. The file
https://github.com/frasercrmck updated
https://github.com/llvm/llvm-project/pull/134053
>From 81675d67f9f182966b86ab630eaa05afe0dc9129 Mon Sep 17 00:00:00 2001
From: Fraser Cormack
Date: Wed, 2 Apr 2025 09:48:43 +0100
Subject: [PATCH 1/2] [libclc] Move lgamma, lgamma_r & tgamma to CLC library
https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/133691
Splitting the 'ln_tbl' into two in db98e292 wasn't done thoroughly enough as
some references to the old table still remained. This commit fixes the
unresolved references by updating to the new split table.
frasercrmck wrote:
Thanks for the heads up, @mgorny - we really need this tested in PRs.
I've fixed forward in #133691.
https://github.com/llvm/llvm-project/pull/132956
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https://github.com/frasercrmck approved this pull request.
https://github.com/llvm/llvm-project/pull/130871
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https://github.com/llvm/llvm-project/pull/132213
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@@ -131,7 +131,8 @@ _CLC_OVERLOAD _CLC_DEF float erfc(float x) {
float ret = 0.0f;
float z = as_float(ix & 0xf000);
-float r = exp(mad(-z, z, -0.5625f)) * exp(mad(z - absx, z + absx, q));
+float r = exp(-z * z) * exp(mad(z - absx, z + absx, q));
+r *= 0
frasercrmck wrote:
> > It's a shame we've got such an ugly way of "opting out" of builtins, but I
> > don't know if it's worth coming up with a nicer one.
>
> Yes, I don't think it's worth it right now.
>
> Could you please submit that PR?
Sure thing.
One thing I wondered is whether the empt
https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/133119
The libclc build system isn't well set up to pass arbitrary options to
arbitrary source files in a non-intrusive way. There isn't currently any other
motivating example to warrant rewriting the build system
@@ -1,24 +1,10 @@
-/*
- * Copyright (c) 2015 Advanced Micro Devices, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
deal
- * in the Software without restriction
https://github.com/frasercrmck updated
https://github.com/llvm/llvm-project/pull/134218
>From 583261a0d1fc57ddb8ae964cbaf4f044c39d9bf2 Mon Sep 17 00:00:00 2001
From: Fraser Cormack
Date: Thu, 3 Apr 2025 09:29:28 +0100
Subject: [PATCH 1/2] [libclc] Move fmin & fmax to CLC library
This is an alt
https://github.com/frasercrmck updated
https://github.com/llvm/llvm-project/pull/132956
>From 490f34c8fa49666cc4e7af228f71908f6102d76a Mon Sep 17 00:00:00 2001
From: Fraser Cormack
Date: Tue, 25 Mar 2025 13:06:05 +
Subject: [PATCH 1/3] [libclc] Move log1p/asinh/acosh to the CLC library
The
https://github.com/frasercrmck edited
https://github.com/llvm/llvm-project/pull/132956
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@@ -256,19 +261,25 @@ function(add_libclc_builtin_set)
get_filename_component( file_dir ${file} DIRECTORY )
+string( REPLACE "/" "-" replaced ${file} )
+set( tgt compile_tgt-${ARG_ARCH_SUFFIX}${replaced})
+
compile_to_bc(
+ TARGET ${tgt}
TRIPLE ${
@@ -63,13 +65,15 @@ function(compile_to_bc)
${ARG_DEPENDENCIES}
DEPFILE ${ARG_OUTPUT}.d
)
+ add_custom_target( ${ARG_TARGET} DEPENDS ${ARG_OUTPUT}${TMP_SUFFIX} )
frasercrmck wrote:
I don't think the (possibly) "temp" output (in the case of `.ll` f
@@ -283,7 +294,7 @@ function(add_libclc_builtin_set)
set( builtins_comp_lib_tgt builtins.comp.${ARG_ARCH_SUFFIX} )
add_custom_target( ${builtins_comp_lib_tgt}
-DEPENDS ${bytecode_files}
+DEPENDS ${compile_tgts}
frasercrmck wrote:
Do we not need to
https://github.com/frasercrmck commented:
Sorry, I didn't realise I hadn't published this review from last week!
https://github.com/llvm/llvm-project/pull/130755
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@@ -342,22 +342,32 @@ function(add_libclc_builtin_set)
set( builtins_opt_lib_tgt builtins.opt.${ARG_ARCH_SUFFIX} )
- # Add opt target
- add_custom_command( OUTPUT ${builtins_opt_lib_tgt}.bc
-COMMAND ${opt_exe} ${ARG_OPT_FLAGS} -o ${builtins_opt_lib_tgt}.bc
- ${bu
https://github.com/frasercrmck edited
https://github.com/llvm/llvm-project/pull/130755
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frasercrmck wrote:
ping, thanks
https://github.com/llvm/llvm-project/pull/131995
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@@ -26,7 +26,7 @@ __clc_frexp(__CLC_GENTYPE x, __CLC_ADDRESS_SPACE __CLC_INTN
*ep) {
(ai & (__CLC_INTN)MANTBITS_SP32);
__CLC_INTN is_inf_nan_or_zero =
- x == __CLC_FP_LIT(0.0) || __clc_isinf(x) || __clc_isnan(x);
+ ai == (__CLC_INTN)0 || __clc_isinf(x) || __
Author: Fraser Cormack
Date: 2025-04-10T10:02:51+01:00
New Revision: 7d32d72f10445657f598cbdf1bb5f3040373daf5
URL:
https://github.com/llvm/llvm-project/commit/7d32d72f10445657f598cbdf1bb5f3040373daf5
DIFF:
https://github.com/llvm/llvm-project/commit/7d32d72f10445657f598cbdf1bb5f3040373daf5.diff
@@ -0,0 +1,36 @@
+//===--===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apac
@@ -6,7 +6,28 @@
//
//===--===//
-#include
+#include
+#include
+
+// cl_khr_global_int32_base_atomics
+#define IMPL(TYPE) \
frasercrmck wrote:
This doesn't look clang-formatted.
https://
https://github.com/frasercrmck edited
https://github.com/llvm/llvm-project/pull/134489
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https://github.com/frasercrmck commented:
Just some general comments, most of which apply to multiple files.
In principle I like the change, though - thank you.
I also think the idea of making overriding based solely on filename is
interesting.
https://github.com/llvm/llvm-project/pull/134489
@@ -6,7 +6,28 @@
//
//===--===//
-#include
+#include
+#include
+
+// cl_khr_global_int32_base_atomics
+#define IMPL(TYPE) \
+_CLC_OVERLOAD _CLC_DEF TYPE atom_cmpxchg(volatile global TYPE *p, TYPE cmp,
TYP
@@ -26,7 +26,7 @@ __clc_frexp(__CLC_GENTYPE x, __CLC_ADDRESS_SPACE __CLC_INTN
*ep) {
(ai & (__CLC_INTN)MANTBITS_SP32);
__CLC_INTN is_inf_nan_or_zero =
- x == __CLC_FP_LIT(0.0) || __clc_isinf(x) || __clc_isnan(x);
+ ai == (__CLC_INTN)0 || __clc_isinf(x) || __
https://github.com/frasercrmck approved this pull request.
https://github.com/llvm/llvm-project/pull/134823
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frasercrmck wrote:
ping
https://github.com/llvm/llvm-project/pull/134218
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https://github.com/frasercrmck approved this pull request.
LGTM
https://github.com/llvm/llvm-project/pull/135002
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https://github.com/frasercrmck closed
https://github.com/llvm/llvm-project/pull/135002
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https://github.com/frasercrmck closed
https://github.com/llvm/llvm-project/pull/135000
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@@ -0,0 +1,24 @@
+//===--===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apac
https://github.com/frasercrmck commented:
Thanks. It seems like a guard mistake in a header has crept into the new
headers. Other than that, LGTM.
https://github.com/llvm/llvm-project/pull/134489
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@@ -0,0 +1,24 @@
+//===--===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apac
@@ -0,0 +1,24 @@
+//===--===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apac
@@ -0,0 +1,24 @@
+//===--===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apac
@@ -239,54 +239,22 @@
#include
#include
-/* cl_khr_global_int32_base_atomics Extension Functions */
-#include
-#include
-#include
-#include
-#include
-#include
-
-/* cl_khr_global_int32_extended_atomics Extension Functions */
-#include
-#include
-#include
-#include
https://github.com/frasercrmck edited
https://github.com/llvm/llvm-project/pull/134489
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frasercrmck wrote:
Friendly ping
https://github.com/llvm/llvm-project/pull/131995
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https://github.com/frasercrmck created
https://github.com/llvm/llvm-project/pull/135000
This commit moves the shuffle and shuffle2 builtins to the CLC library. In so
doing it makes the headers simpler and re-usable for other builtin layers to
hook into the CLC functions, if they wish.
An addi
https://github.com/frasercrmck closed
https://github.com/llvm/llvm-project/pull/134823
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https://github.com/frasercrmck updated
https://github.com/llvm/llvm-project/pull/129679
>From aabdf579b3d88e59f8604943573c9beeafb4cf66 Mon Sep 17 00:00:00 2001
From: Fraser Cormack
Date: Tue, 4 Mar 2025 10:03:00 +
Subject: [PATCH 1/3] [libclc] Move several 'native' builtins to CLC library
Author: Fraser Cormack
Date: 2025-04-01T14:54:50+01:00
New Revision: c1efd8b663b7db3c717fae8a1991dcc4b8304c8f
URL:
https://github.com/llvm/llvm-project/commit/c1efd8b663b7db3c717fae8a1991dcc4b8304c8f
DIFF:
https://github.com/llvm/llvm-project/commit/c1efd8b663b7db3c717fae8a1991dcc4b8304c8f.diff
Author: Fraser Cormack
Date: 2025-04-01T17:36:01+01:00
New Revision: 00e6d4fe064bb48e16c1eda018e6ed5e9f99cba9
URL:
https://github.com/llvm/llvm-project/commit/00e6d4fe064bb48e16c1eda018e6ed5e9f99cba9
DIFF:
https://github.com/llvm/llvm-project/commit/00e6d4fe064bb48e16c1eda018e6ed5e9f99cba9.diff
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