Author: alelab01
Date: Sun Jul 14 11:32:42 2019
New Revision: 366027
URL: http://llvm.org/viewvc/llvm-project?rev=366027&view=rev
Log:
[clang][Driver][ARM] Favor -mfpu over default CPU features
When processing the command line options march, mcpu and mfpu, we store
the implied target features on
Author: alelab01
Date: Sun Jul 14 13:31:15 2019
New Revision: 366031
URL: http://llvm.org/viewvc/llvm-project?rev=366031&view=rev
Log:
[TargetParser][ARM] Account dependencies when processing target features
Teaches ARM::appendArchExtFeatures to account dependencies when processing
target feature
Author: alelab01
Date: Tue Jul 2 02:45:24 2019
New Revision: 364895
URL: http://llvm.org/viewvc/llvm-project?rev=364895&view=rev
Log:
[clang][Driver][ARM] NFC: Remove unused function parameter
Removes a vector reference that was added by D62998, since the
preexisting function parameter is suffic
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/70473
>From 454d423f0018db65dbbc0739ddf9ecbb8d38fef6 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Fri, 27 Oct 2023 16:45:11 +0100
Subject: [PATCH] [LAA] Add a test case to show incorrect dependency
clas
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/84405
>From bde335c2b4a85ee5e7f57ff9081c38b4dd9839ca Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Thu, 7 Mar 2024 22:25:13 +
Subject: [PATCH] [FMV] Emit the resolver along with the default version
d
labrinea wrote:
The key takeaway from my conversation with @DanielKristofKiss was that it is
important for Function Multi Versioning to work even when the default target
attribute is omitted. It was quite a headache to get this working in clang, but
the latest revision supports the desired beh
@@ -4120,6 +4127,9 @@ void CodeGenModule::emitMultiVersionFunctions() {
TA->getArchitecture(), Feats);
} else {
const auto *TVA = CurFD->getAttr();
+ if (TVA->isDefaultVersion() &&
+ CurF
@@ -4347,6 +4362,19 @@ void CodeGenModule::emitCPUDispatchDefinition(GlobalDecl
GD) {
}
}
+/// Adds a declaration to the list of multi version functions if not present.
+void CodeGenModule::AddDeferredMultiVersionResolverToEmit(GlobalDecl GD) {
+ const auto *FD = cast(GD.g
@@ -84,9 +84,33 @@ int hoo(void) {
return fp1() + fp2();
}
+// This should generate one target version but no resolver.
+__attribute__((target_version("default"))) int
unused_with_forward_default_decl(void);
+__attribute__((target_version("mops"))) int
unused_with_forward_
@@ -4347,6 +4362,19 @@ void CodeGenModule::emitCPUDispatchDefinition(GlobalDecl
GD) {
}
}
+/// Adds a declaration to the list of multi version functions if not present.
+void CodeGenModule::AddDeferredMultiVersionResolverToEmit(GlobalDecl GD) {
+ const auto *FD = cast(GD.g
@@ -4347,6 +4362,19 @@ void CodeGenModule::emitCPUDispatchDefinition(GlobalDecl
GD) {
}
}
+/// Adds a declaration to the list of multi version functions if not present.
+void CodeGenModule::AddDeferredMultiVersionResolverToEmit(GlobalDecl GD) {
+ const auto *FD = cast(GD.g
@@ -84,9 +84,33 @@ int hoo(void) {
return fp1() + fp2();
}
+// This should generate one target version but no resolver.
+__attribute__((target_version("default"))) int
unused_with_forward_default_decl(void);
+__attribute__((target_version("mops"))) int
unused_with_forward_
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/84405
>From 2576857fe4b5c0b99c1a29c07f92c80498687665 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Thu, 7 Mar 2024 22:25:13 +
Subject: [PATCH] [FMV] Emit the resolver along with the default version
d
@@ -4347,6 +4362,19 @@ void CodeGenModule::emitCPUDispatchDefinition(GlobalDecl
GD) {
}
}
+/// Adds a declaration to the list of multi version functions if not present.
+void CodeGenModule::AddDeferredMultiVersionResolverToEmit(GlobalDecl GD) {
+ const auto *FD = cast(GD.g
@@ -4347,6 +4362,19 @@ void CodeGenModule::emitCPUDispatchDefinition(GlobalDecl
GD) {
}
}
+/// Adds a declaration to the list of multi version functions if not present.
+void CodeGenModule::AddDeferredMultiVersionResolverToEmit(GlobalDecl GD) {
+ const auto *FD = cast(GD.g
@@ -4347,6 +4362,19 @@ void CodeGenModule::emitCPUDispatchDefinition(GlobalDecl
GD) {
}
}
+/// Adds a declaration to the list of multi version functions if not present.
+void CodeGenModule::AddDeferredMultiVersionResolverToEmit(GlobalDecl GD) {
+ const auto *FD = cast(GD.g
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/84405
>From 6a495010024b93bb8871eebe6e10c62d1f5d2fc5 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Thu, 7 Mar 2024 22:25:13 +
Subject: [PATCH] [FMV] Emit the resolver along with the default version
d
https://github.com/labrinea edited
https://github.com/llvm/llvm-project/pull/84405
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https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/85454
This was a limitation which has now been lifted upon request.
Please read the thread below for more details:
https://github.com/llvm/llvm-project/pull/84405#discussion_r1525583647
Basically it allows to
labrinea wrote:
I think I messed up the review, this is based on #84405 so it shows unrelated
changes. Ignore for now. I'll rebase
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labrinea wrote:
Hmm, I am now having second thoughts about this change. All is well without a
default declaration as long as we don't have a caller in the TU. In that case
(if there is a caller) a resolver is needed, but without a default declaration
we can't create a complete resolver (the re
labrinea wrote:
> In the current patch, it just gets the non-mangled name. And the fact that we
> get a not-mangled function that uses `feature` without going through a
> resolver is concerning to me.
I am not sure I understand. Are you refering to the StringSet I added which
keeps non-mangle
labrinea wrote:
Ah, I see. That is addressed in #85454 but I have already expressed a concern.
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labrinea wrote:
I have raised two related pull requests stacked on this one:
- https://github.com/labrinea/llvm-project/pull/1
- https://github.com/labrinea/llvm-project/pull/2
Is there anything else we would like to address in this patch?
https://github.com/llvm/llvm-project/pull/84405
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https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/85914
Reverts llvm/llvm-project#84405
In between of passing the precommit tests on github and being merged
some change (perhaps in the AArch64 backend?) landed which resulted
in altering the generated resolver. I will
https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/85923
…ion.
This was reverted because the resolver didn't look as expected in one of the
tests. I believe it had some interaction with #84146. I have now regenerated it
using -target-feature -fp-armv8.
>From 20a44f
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/85923
>From c0c07deebef4e2c76d935b4ce8fc1d4abddab4db Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Wed, 20 Mar 2024 10:32:58 +
Subject: [PATCH] Reland [FMV] Emit the resolver along with the default ve
https://github.com/labrinea closed
https://github.com/llvm/llvm-project/pull/85923
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https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/85454
>From 60a6fcd7560ec434a8369240f7a9cd13cf035c42 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Fri, 15 Mar 2024 19:25:16 +
Subject: [PATCH] [FMV] Allow multi versioning without default declaration
https://github.com/labrinea edited
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labrinea wrote:
Update: The ACLE spec is now explicit about this (see
https://github.com/ARM-software/acle/pull/310), so we can safely implement the
change in the compiler. Implementation-wise I have moved the static cast to
`llvm::Function` inside the `createFunction()` lambda.
https://githu
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@@ -70,17 +69,23 @@ int __attribute__((target_version("lse"))) extc(void) {
return 1; }
auto __attribute__((target_version("default"))) ret1(void) { return 1; }
auto __attribute__((target_version("dpb"))) ret2(void) { return 1; }
+// expected-error@-1 {{attribute 'target_vers
@@ -483,14 +483,16 @@ void just_fine(void) {}
__arm_locally_streaming
__attribute__((target_version("sme2")))
-void just_fine_locally_streaming(void) {}
+void incompatible_locally_streaming(void) {}
+// expected-error@-1 {{attribute 'target_version' multiversioning cannot be
@@ -109,9 +109,22 @@ int unused_with_implicit_default_def(void) { return 1; }
int unused_with_implicit_forward_default_def(void) { return 0; }
__attribute__((target_version("lse"))) int
unused_with_implicit_forward_default_def(void) { return 1; }
-// This should generate a no
@@ -68,13 +68,15 @@ int __attribute__((target_version(""))) unsup1(void) {
return 1; }
void __attribute__((target_version("crc32"))) unsup2(void) {}
void __attribute__((target_version("default+fp16"))) koo(void) {}
+//expected-error@-1 {{function multiversioning doesn't suppo
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https://github.com/llvm/llvm-project/pull/85454
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@@ -109,9 +109,22 @@ int unused_with_implicit_default_def(void) { return 1; }
int unused_with_implicit_forward_default_def(void) { return 0; }
__attribute__((target_version("lse"))) int
unused_with_implicit_forward_default_def(void) { return 1; }
-// This should generate a no
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/85454
>From 289d36fd371f9f47e2ceb3a682e3c6d122341f3b Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Fri, 15 Mar 2024 19:25:16 +
Subject: [PATCH] [FMV] Allow multi versioning without default declaration
@@ -109,9 +109,22 @@ int unused_with_implicit_default_def(void) { return 1; }
int unused_with_implicit_forward_default_def(void) { return 0; }
__attribute__((target_version("lse"))) int
unused_with_implicit_forward_default_def(void) { return 1; }
-// This should generate a no
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https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/86493
The latest ACLE allows it and further clarifies the following
in regards to the combination of the two attributes:
"If the `default` matches with another explicitly provided
version in the same translation unit
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/86493
>From dfef9d04c0a65423a051ac00044b39f8911aa731 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Fri, 22 Mar 2024 17:21:13 +
Subject: [PATCH] [FMV] Allow mixing target_version with target_clones.
T
@@ -0,0 +1,278 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
UTC_ARGS: --function-signature --check-attributes --check-globals
--include-generated-funcs
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature -v9.5a -S
-emit-llvm -
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@@ -0,0 +1,278 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
UTC_ARGS: --function-signature --check-attributes --check-globals
--include-generated-funcs
+// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature -v9.5a -S
-emit-llvm -
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https://github.com/llvm/llvm-project/pull/86493
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labrinea wrote:
@erichkeane while I agree that Clang might not be the best place for such an
optimization, I have some concerns about implementing it in LLVM:
* We cannot distinguish a FMV resolver from any other ifunc resolver.
* There is no information at the LLVM IR level about function versi
https://github.com/labrinea approved this pull request.
LGTM. Good catch, thanks for fixing the bug!
https://github.com/llvm/llvm-project/pull/81167
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labrinea wrote:
Looks like we've done something similar for `target_clones` to fix a linker
issue:
https://github.com/llvm/llvm-project/commit/cee5b8777fa98312b05bf8aa81554910a8f867c5.
What is the motive in this case?
https://github.com/llvm/llvm-project/pull/81194
___
labrinea wrote:
> Looks like we've done something similar for `target_clones` to fix a linker
> issue:
> [cee5b87](https://github.com/llvm/llvm-project/commit/cee5b8777fa98312b05bf8aa81554910a8f867c5).
> What is the motive in this case?
Ah, I just saw that it fixes https://github.com/llvm/
https://github.com/labrinea approved this pull request.
LGTM
https://github.com/llvm/llvm-project/pull/81194
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@@ -673,7 +673,7 @@ int hoo(void) {
//
//
// CHECK: Function Attrs: noinline nounwind optnone
-// CHECK-LABEL: define {{[^@]+}}@fmv_inline._MlseMrdm
+// CHECK-LABEL: define {{[^@]+}}@fmv_inline._MlseMrdma
labrinea wrote:
I raised this with the GCC team, I don'
@@ -673,7 +673,7 @@ int hoo(void) {
//
//
// CHECK: Function Attrs: noinline nounwind optnone
-// CHECK-LABEL: define {{[^@]+}}@fmv_inline._MlseMrdm
+// CHECK-LABEL: define {{[^@]+}}@fmv_inline._MlseMrdma
labrinea wrote:
Right, I didn't know that the resolver
https://github.com/labrinea closed
https://github.com/llvm/llvm-project/pull/83887
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https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/84165
ACLE suggests: https://github.com/ARM-software/acle/pull/308 GCC emits
diagnostics for attribute strings which contain duplicate features, but for now
let's follow the SPEC in regards to mangling rules and we c
https://github.com/labrinea closed
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https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/84405
We would like the resolver to be generated eagerly, even if the versioned
function is not called from the current translation unit. Fixes #81494.
>From d2572439a8e130c03febd60366962c96b5b4501d Mon Sep 17 00:00:
@@ -85,7 +85,21 @@ int hoo(void) {
}
+// This should generate one target version but no resolver.
+__attribute__((target_version("default"))) int
unused_with_forward_default_decl(void);
+__attribute__((target_version("mops"))) int
unused_with_forward_default_decl(void) { re
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/81893
>From 20734a17b90e4b425aa86f152777301cda810e63 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Thu, 15 Feb 2024 15:53:51 +
Subject: [PATCH] [clang] Refactor target attribute mangling.
Before this
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https://github.com/llvm/llvm-project/pull/81893
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labrinea wrote:
ping
https://github.com/llvm/llvm-project/pull/81893
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https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/81893
>From 4bff4f1378140b084256cf1647d26466e95d6ef7 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Thu, 15 Feb 2024 15:53:51 +
Subject: [PATCH] [clang] Refactor target attribute mangling.
Before this
@@ -857,6 +864,36 @@ void AArch64TargetCodeGenInfo::checkFunctionCallABI(
<< Callee->getDeclName();
}
+void AArch64ABIInfo::appendAttributeMangling(TargetClonesAttr *Attr,
+ unsigned Index,
+
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/81893
>From ed8c2af0e301885101097c23cc96c872e8650529 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Thu, 15 Feb 2024 15:53:51 +
Subject: [PATCH] [clang] Refactor target attribute mangling.
Before this
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https://github.com/llvm/llvm-project/pull/81893
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https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/80540
>From fb56f1c31f7f6fb847b95e0ffe97a39ac76759a9 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Tue, 30 Jan 2024 11:17:55 +
Subject: [PATCH] [TargetParser][AArch64] Add alias for FEAT_RDM.
This pa
https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/83464
This decouples feature priorities from name mangling. Doing so will prevent ABI
breakages in case we change the feature priorities. Formalized in ACLE here:
https://github.com/ARM-software/acle/pull/303.
>From
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https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/80540
>From 6f1f4e18de7ebad5e090ea268f3f053562db444c Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Tue, 30 Jan 2024 11:17:55 +
Subject: [PATCH] [TargetParser][AArch64] Add alias for FEAT_RDM.
This pa
https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/83550
Fixes the `sanitizer-x86_64-linux-android` buildbot.
>From df67789e087ff560d39b038f7073b3ae90061ff2 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Fri, 1 Mar 2024 09:59:51 +
Subject: [PATCH] [cl
labrinea wrote:
Thanks for the quick respose!
https://github.com/llvm/llvm-project/pull/83550
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https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/80540
>From d2c973c8ebd7605b47a8c5fc928d2d85426c8a6d Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Tue, 30 Jan 2024 11:17:55 +
Subject: [PATCH] [TargetParser][AArch64] Add alias for FEAT_RDM.
This pa
labrinea wrote:
ping
https://github.com/llvm/llvm-project/pull/80540
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labrinea wrote:
Thanks!
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https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/80540
>From 5354d6c6736f84881466b6b5b99479137eddbf29 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Tue, 30 Jan 2024 11:17:55 +
Subject: [PATCH] [TargetParser][AArch64] Add alias for FEAT_RDM.
This pa
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https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/83887
This patch fixes #71698. It allows defining the default target version prior to
other version definitions without raising semantic errors.
>From 5a717769aa20dfbbaa8edd4bcd3048ebedee20a2 Mon Sep 17 00:00:00 2001
labrinea wrote:
I appreciate there's some code repetition between
`CheckTargetCausesMultiVersioning` and `CheckMultiVersionAdditionalDecl`.
Perhaps they deserve some refactoring in a separate patch. Please advise if you
have any suggestions for moving the fix elsewhere.
https://github.com/llv
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/83887
>From 65a192641b5856714b9247372d9c471e03520762 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Mon, 4 Mar 2024 18:12:22 +
Subject: [PATCH] [FMV] Allow target version definitions in any order.
Thi
@@ -11455,9 +11465,8 @@ static bool CheckTargetCausesMultiVersioning(Sema &S,
FunctionDecl *OldFD,
}
// If this is 'default', permit the forward declaration.
- if (!OldFD->isMultiVersion() &&
- ((NewTA && NewTA->isDefaultVersion() && !OldTA) ||
- (NewTVA && Ne
https://github.com/labrinea edited
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https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/83887
>From f11c97d7f7f67edaf6de4390bcceb13dfea376a1 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Mon, 4 Mar 2024 18:12:22 +
Subject: [PATCH] [FMV] Allow target version definitions in any order.
Thi
https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/80540
This patch allows using the name "rdma" as an alias for "rdm". The name makes
its way to target attributes as well as the command line via the -march and
-mcpu options. The motivation was originally to support
https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/79316
This patch follows the latest ACLE spec (see PR #279). It adds a name alias for
FEAT_RDM and adjusts priorities for FEAT_DOTPROD, FEAT_SM4, FEAT_FP16FML,
FEAT_RDM.
>From cd0a99001387a64d23d606367a0e08bb88b0bfc
https://github.com/labrinea edited
https://github.com/llvm/llvm-project/pull/79316
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https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/79455
Adds tests showing that we select function version according to the highest
feature priority. This will make the changes introduced by #79316 more evident.
>From 07719ca748ad94e3c458293e46538491d771cc00 Mon Sep
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/79316
>From 07719ca748ad94e3c458293e46538491d771cc00 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Thu, 25 Jan 2024 14:09:06 +
Subject: [PATCH 1/2] [NFC][FMV] Add tests to demonstrate feature prioriti
https://github.com/labrinea closed
https://github.com/llvm/llvm-project/pull/79455
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https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/79316
>From 3e0a3fe637ad6e815d0ca62f38d39c2a27f8b5d5 Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Wed, 24 Jan 2024 15:26:01 +
Subject: [PATCH] [FMV] Change feature priorities according to ACLE.
This
https://github.com/labrinea edited
https://github.com/llvm/llvm-project/pull/79316
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https://github.com/labrinea edited
https://github.com/llvm/llvm-project/pull/79316
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@@ -114,6 +121,10 @@ const AArch64::ArchInfo *AArch64::parseArch(StringRef
Arch) {
}
std::optional AArch64::parseArchExtension(StringRef
ArchExt) {
+ // Resolve aliases first.
+ ArchExt = resolveExtAlias(ArchExt);
labrinea wrote:
I will separate this chan
https://github.com/labrinea created
https://github.com/llvm/llvm-project/pull/79614
With a690e86 we added -mcpu/mtune=native support to handle the Microsoft Azure
Cobalt 100 CPU as a Neoverse N2. This patch adds a CPU alias in TargetParser to
maintain compatibility with GCC.
>From 3586485f359
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/79614
>From e2fe85fb1615abc6e3e82788e7ff26abe329ceeb Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Fri, 26 Jan 2024 10:28:19 +
Subject: [PATCH] [AArch64][TargetParser] Add mcpu alias for Microsoft Azu
https://github.com/labrinea updated
https://github.com/llvm/llvm-project/pull/79614
>From 9c7d2d02f59af921cd49f5969b35cbddbec7dfec Mon Sep 17 00:00:00 2001
From: Alexandros Lamprineas
Date: Fri, 26 Jan 2024 10:28:19 +
Subject: [PATCH] [AArch64][TargetParser] Add mcpu alias for Microsoft Azu
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