[PATCH] D125728: [WebAssembly] Update supported features in -mcpu=generic

[Dan Gohman via Phabricator via cfe-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG1e4e2433bcd1: [WebAssembly] Update supported features in the 
generic CPU configuration (authored by sunfish).

Changed prior to commit:
  https://reviews.llvm.org/D125728?vs=431067=470584#toc

Repository:
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Files:
  clang/docs/ReleaseNotes.rst
  clang/lib/Basic/Targets/WebAssembly.cpp
  clang/test/Driver/wasm-features.c


Index: clang/test/Driver/wasm-features.c
===
--- /dev/null
+++ clang/test/Driver/wasm-features.c
@@ -0,0 +1,43 @@
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -fsyntax-only 2>&1 | 
FileCheck %s
+
+// CHECK: "-fvisibility=hidden"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 2>&1 | FileCheck %s 
-check-prefix=DEFAULT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mcpu=mvp 2>&1 | 
FileCheck %s -check-prefix=MVP
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mcpu=bleeding-edge 
2>&1 | FileCheck %s -check-prefix=BLEEDING-EDGE
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mbulk-memory 2>&1 | 
FileCheck %s -check-prefix=BULK-MEMORY
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-bulk-memory 2>&1 | 
FileCheck %s -check-prefix=NO-BULK-MEMORY
+
+// BULK-MEMORY: "-target-feature" "+bulk-memory"
+// NO-BULK-MEMORY: "-target-feature" "-bulk-memory"
+// DEFAULT-NOT: "-target-feature" "-bulk-memory"
+// MVP-NOT: "-target-feature" "+bulk-memory"
+// BLEEDING-EDGE-NOT: "-target-feature" "-bulk-memory"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mmutable-globals 2>&1 
| FileCheck %s -check-prefix=MUTABLE-GLOBALS
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-mutable-globals 
2>&1 | FileCheck %s -check-prefix=NO-MUTABLE-GLOBALS
+
+// MUTABLE-GLOBALS: "-target-feature" "+mutable-globals"
+// NO-MUTABLE-GLOBALS: "-target-feature" "-mutable-globals"
+// DEFAULT-NOT: "-target-feature" "-mutable-globals"
+// MVP-NOT: "-target-feature" "+mutable-globals"
+// BLEEDING-EDGE-NOT: "-target-feature" "-mutable-globals"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -msign-ext 2>&1 | 
FileCheck %s -check-prefix=SIGN-EXT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-sign-ext 2>&1 | 
FileCheck %s -check-prefix=NO-SIGN-EXT
+
+// SIGN-EXT: "-target-feature" "+sign-ext"
+// NO-SIGN-EXT: "-target-feature" "-sign-ext"
+// DEFAULT-NOT: "-target-feature" "-sign-ext"
+// MVP-NOT: "-target-feature" "+sign-ext"
+// BLEEDING-EDGE-NOT: "-target-feature" "-sign-ext"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mnontrapping-fptoint 
2>&1 | FileCheck %s -check-prefix=NONTRAPPING-FPTOINT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 
-mno-nontrapping-fptoint 2>&1 | FileCheck %s 
-check-prefix=NO-NONTRAPPING-FPTOINT
+
+// NONTRAPPING-FPTOINT: "-target-feature" "+nontrapping-fptoint"
+// NO-NONTRAPPING-FPTOINT: "-target-feature" "-nontrapping-fptoint"
+// DEFAULT-NOT: "-target-feature" "-nontrapping-fptoint"
+// MVP-NOT: "-target-feature" "+nontrapping-fptoint"
+// BLEEDING-EDGE-NOT: "-target-feature" "-nontrapping-fptoint"
Index: clang/lib/Basic/Targets/WebAssembly.cpp
===
--- clang/lib/Basic/Targets/WebAssembly.cpp
+++ clang/lib/Basic/Targets/WebAssembly.cpp
@@ -147,6 +147,9 @@
 Features["mutable-globals"] = true;
 Features["tail-call"] = true;
 setSIMDLevel(Features, SIMD128, true);
+  } else if (CPU == "generic") {
+Features["sign-ext"] = true;
+Features["mutable-globals"] = true;
   }
 
   return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
Index: clang/docs/ReleaseNotes.rst
===
--- clang/docs/ReleaseNotes.rst
+++ clang/docs/ReleaseNotes.rst
@@ -607,6 +607,12 @@
   * Support intrinsic of ``__cmpccxadd_epi32``.
   * Support intrinsic of ``__cmpccxadd_epi64``.
 
+WebAssembly Support in Clang
+
+
+The -mcpu=generic configuration now enables sign-ext and mutable-globals. These
+proposals are standardized and available in all major engines.
+
 DWARF Support in Clang
 --
 


Index: clang/test/Driver/wasm-features.c
===
--- /dev/null
+++ clang/test/Driver/wasm-features.c
@@ -0,0 +1,43 @@
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -fsyntax-only 2>&1 | FileCheck %s
+
+// CHECK: "-fvisibility=hidden"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 2>&1 | FileCheck %s -check-prefix=DEFAULT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mcpu=mvp 2>&1 | FileCheck %s -check-prefix=MVP
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mcpu=bleeding-edge 

[PATCH] D125728: [WebAssembly] Update supported features in -mcpu=generic

[Sam Clegg via Phabricator via cfe-commits]

sbc100 added a comment.

Emscripten-side change in preparation for this to land: 
https://github.com/emscripten-core/emscripten/pull/17689


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[PATCH] D125728: [WebAssembly] Update supported features in -mcpu=generic

[Sam Clegg via Phabricator via cfe-commits]

sbc100 accepted this revision.
sbc100 added a comment.
This revision is now accepted and ready to land.

Do you think we should backport this to llvm 15, since it missed the branch 
point?


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[PATCH] D125728: [WebAssembly] Update supported features in -mcpu=generic

[Alex Bradbury via Phabricator via cfe-commits]

asb added a comment.

One thing that's not ideal about this test case is that it still passes if you 
delete the changes to WebAssembly.cpp. At least for RISC-V, selecting the -mcpu 
also emits the relevant `-target-feature +foo` for features supported by that 
CPU, which doesn't seem to happen here. Haven't been able to trace through to 
see if that's due to us doing something obviously different in the RISC-V case.


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[PATCH] D125728: [WebAssembly] Update supported features in -mcpu=generic

[Dan Gohman via Phabricator via cfe-commits]

sunfish updated this revision to Diff 431067.
sunfish added a comment.

Add tests for -mcpu=mvp and -mcpu=bleeding-edge.


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Files:
  clang/docs/ReleaseNotes.rst
  clang/lib/Basic/Targets/WebAssembly.cpp
  clang/test/Driver/wasm-features.c


Index: clang/test/Driver/wasm-features.c
===
--- clang/test/Driver/wasm-features.c
+++ clang/test/Driver/wasm-features.c
@@ -0,0 +1,43 @@
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -fsyntax-only 2>&1 | 
FileCheck %s
+
+// CHECK: "-fvisibility" "hidden"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 2>&1 | FileCheck %s 
-check-prefix=DEFAULT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mcpu=mvp 2>&1 | 
FileCheck %s -check-prefix=MVP
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mcpu=bleeding-edge 
2>&1 | FileCheck %s -check-prefix=BLEEDING-EDGE
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mbulk-memory 2>&1 | 
FileCheck %s -check-prefix=BULK-MEMORY
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-bulk-memory 2>&1 | 
FileCheck %s -check-prefix=NO-BULK-MEMORY
+
+// BULK-MEMORY: "-target-feature" "+bulk-memory"
+// NO-BULK-MEMORY: "-target-feature" "-bulk-memory"
+// DEFAULT-NOT: "-target-feature" "-bulk-memory"
+// MVP-NOT: "-target-feature" "+bulk-memory"
+// BLEEDING-EDGE-NOT: "-target-feature" "-bulk-memory"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mmutable-globals 2>&1 
| FileCheck %s -check-prefix=MUTABLE-GLOBALS
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-mutable-globals 
2>&1 | FileCheck %s -check-prefix=NO-MUTABLE-GLOBALS
+
+// MUTABLE-GLOBALS: "-target-feature" "+mutable-globals"
+// NO-MUTABLE-GLOBALS: "-target-feature" "-mutable-globals"
+// DEFAULT-NOT: "-target-feature" "-mutable-globals"
+// MVP-NOT: "-target-feature" "+mutable-globals"
+// BLEEDING-EDGE-NOT: "-target-feature" "-mutable-globals"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -msign-ext 2>&1 | 
FileCheck %s -check-prefix=SIGN-EXT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-sign-ext 2>&1 | 
FileCheck %s -check-prefix=NO-SIGN-EXT
+
+// SIGN-EXT: "-target-feature" "+sign-ext"
+// NO-SIGN-EXT: "-target-feature" "-sign-ext"
+// DEFAULT-NOT: "-target-feature" "-sign-ext"
+// MVP-NOT: "-target-feature" "+sign-ext"
+// BLEEDING-EDGE-NOT: "-target-feature" "-sign-ext"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mnontrapping-fptoint 
2>&1 | FileCheck %s -check-prefix=NONTRAPPING-FPTOINT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 
-mno-nontrapping-fptoint 2>&1 | FileCheck %s 
-check-prefix=NO-NONTRAPPING-FPTOINT
+
+// NONTRAPPING-FPTOINT: "-target-feature" "+nontrapping-fptoint"
+// NO-NONTRAPPING-FPTOINT: "-target-feature" "-nontrapping-fptoint"
+// DEFAULT-NOT: "-target-feature" "-nontrapping-fptoint"
+// MVP-NOT: "-target-feature" "+nontrapping-fptoint"
+// BLEEDING-EDGE-NOT: "-target-feature" "-nontrapping-fptoint"
Index: clang/lib/Basic/Targets/WebAssembly.cpp
===
--- clang/lib/Basic/Targets/WebAssembly.cpp
+++ clang/lib/Basic/Targets/WebAssembly.cpp
@@ -147,6 +147,11 @@
 Features["mutable-globals"] = true;
 Features["tail-call"] = true;
 setSIMDLevel(Features, SIMD128, true);
+  } else if (CPU == "generic") {
+Features["nontrapping-fptoint"] = true;
+Features["sign-ext"] = true;
+Features["bulk-memory"] = true;
+Features["mutable-globals"] = true;
   }
 
   return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
Index: clang/docs/ReleaseNotes.rst
===
--- clang/docs/ReleaseNotes.rst
+++ clang/docs/ReleaseNotes.rst
@@ -437,6 +437,13 @@
 X86 Support in Clang
 
 
+WebAssembly Support in Clang
+
+
+The -mcpu=generic configuration now enables nontrapping-fptoint, sign-ext,
+bulk-memory, and mutable-globals. These proposals are standardized and
+available in all major engines.
+
 DWARF Support in Clang
 --
 


Index: clang/test/Driver/wasm-features.c
===
--- clang/test/Driver/wasm-features.c
+++ clang/test/Driver/wasm-features.c
@@ -0,0 +1,43 @@
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -fsyntax-only 2>&1 | FileCheck %s
+
+// CHECK: "-fvisibility" "hidden"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 2>&1 | FileCheck %s -check-prefix=DEFAULT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mcpu=mvp 2>&1 | FileCheck %s -check-prefix=MVP
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mcpu=bleeding-edge 2>&1 | FileCheck %s -check-prefix=BLEEDING-EDGE
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 

[PATCH] D125728: [WebAssembly] Update supported features in -mcpu=generic

[Dan Gohman via Phabricator via cfe-commits]

sunfish updated this revision to Diff 431064.
sunfish added a comment.

Add a driver test, and add release notes.


Repository:
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Files:
  clang/docs/ReleaseNotes.rst
  clang/lib/Basic/Targets/WebAssembly.cpp
  clang/test/Driver/wasm-features.c


Index: clang/test/Driver/wasm-features.c
===
--- clang/test/Driver/wasm-features.c
+++ clang/test/Driver/wasm-features.c
@@ -0,0 +1,33 @@
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -fsyntax-only 2>&1 | 
FileCheck %s
+
+// CHECK: "-fvisibility" "hidden"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 2>&1 | FileCheck %s 
-check-prefix=DEFAULT
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mbulk-memory 2>&1 | 
FileCheck %s -check-prefix=BULK-MEMORY
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-bulk-memory 2>&1 | 
FileCheck %s -check-prefix=NO-BULK-MEMORY
+
+// BULK-MEMORY: "-target-feature" "+bulk-memory"
+// NO-BULK-MEMORY: "-target-feature" "-bulk-memory"
+// DEFAULT-NOT: "-target-feature" "-bulk-memory"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mmutable-globals 2>&1 
| FileCheck %s -check-prefix=MUTABLE-GLOBALS
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-mutable-globals 
2>&1 | FileCheck %s -check-prefix=NO-MUTABLE-GLOBALS
+
+// MUTABLE-GLOBALS: "-target-feature" "+mutable-globals"
+// NO-MUTABLE-GLOBALS: "-target-feature" "-mutable-globals"
+// DEFAULT-NOT: "-target-feature" "-mutable-globals"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -msign-ext 2>&1 | 
FileCheck %s -check-prefix=SIGN-EXT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-sign-ext 2>&1 | 
FileCheck %s -check-prefix=NO-SIGN-EXT
+
+// SIGN-EXT: "-target-feature" "+sign-ext"
+// NO-SIGN-EXT: "-target-feature" "-sign-ext"
+// DEFAULT-NOT: "-target-feature" "-sign-ext"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mnontrapping-fptoint 
2>&1 | FileCheck %s -check-prefix=NONTRAPPING-FPTOINT
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 
-mno-nontrapping-fptoint 2>&1 | FileCheck %s 
-check-prefix=NO-NONTRAPPING-FPTOINT
+
+// NONTRAPPING-FPTOINT: "-target-feature" "+nontrapping-fptoint"
+// NO-NONTRAPPING-FPTOINT: "-target-feature" "-nontrapping-fptoint"
+// DEFAULT-NOT: "-target-feature" "-nontrapping-fptoint"
Index: clang/lib/Basic/Targets/WebAssembly.cpp
===
--- clang/lib/Basic/Targets/WebAssembly.cpp
+++ clang/lib/Basic/Targets/WebAssembly.cpp
@@ -147,6 +147,11 @@
 Features["mutable-globals"] = true;
 Features["tail-call"] = true;
 setSIMDLevel(Features, SIMD128, true);
+  } else if (CPU == "generic") {
+Features["nontrapping-fptoint"] = true;
+Features["sign-ext"] = true;
+Features["bulk-memory"] = true;
+Features["mutable-globals"] = true;
   }
 
   return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
Index: clang/docs/ReleaseNotes.rst
===
--- clang/docs/ReleaseNotes.rst
+++ clang/docs/ReleaseNotes.rst
@@ -437,6 +437,13 @@
 X86 Support in Clang
 
 
+WebAssembly Support in Clang
+
+
+The -mcpu=generic configuration now enables nontrapping-fptoint, sign-ext,
+bulk-memory, and mutable-globals. These proposals are standardized and
+available in all major engines.
+
 DWARF Support in Clang
 --
 


Index: clang/test/Driver/wasm-features.c
===
--- clang/test/Driver/wasm-features.c
+++ clang/test/Driver/wasm-features.c
@@ -0,0 +1,33 @@
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -fsyntax-only 2>&1 | FileCheck %s
+
+// CHECK: "-fvisibility" "hidden"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s 2>&1 | FileCheck %s -check-prefix=DEFAULT
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mbulk-memory 2>&1 | FileCheck %s -check-prefix=BULK-MEMORY
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-bulk-memory 2>&1 | FileCheck %s -check-prefix=NO-BULK-MEMORY
+
+// BULK-MEMORY: "-target-feature" "+bulk-memory"
+// NO-BULK-MEMORY: "-target-feature" "-bulk-memory"
+// DEFAULT-NOT: "-target-feature" "-bulk-memory"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mmutable-globals 2>&1 | FileCheck %s -check-prefix=MUTABLE-GLOBALS
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -mno-mutable-globals 2>&1 | FileCheck %s -check-prefix=NO-MUTABLE-GLOBALS
+
+// MUTABLE-GLOBALS: "-target-feature" "+mutable-globals"
+// NO-MUTABLE-GLOBALS: "-target-feature" "-mutable-globals"
+// DEFAULT-NOT: "-target-feature" "-mutable-globals"
+
+// RUN: %clang --target=wasm32-unknown-unknown -### %s -msign-ext 2>&1 | FileCheck %s -check-prefix=SIGN-EXT
+// RUN: 

[PATCH] D125728: [WebAssembly] Update supported features in -mcpu=generic

[Alex Bradbury via Phabricator via cfe-commits]

asb added a comment.

Oh, and per recent updates 
 to the LLVM 
Developer policy I think it would be worth updating the Clang ReleaseNotes.rst 
to mention this change.


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[PATCH] D125728: [WebAssembly] Update supported features in -mcpu=generic

[Alex Bradbury via Phabricator via cfe-commits]

asb added a comment.

Based on the discussion we had, I think this makes sense. It's a bit 
repetitive, but could you please add a test to clang/test/Driver that checks 
the list of enabled features for generic (and for completeness, probably 
bleeding-edge as well). Thanks.


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[PATCH] D125728: [WebAssembly] Update supported features in -mcpu=generic

[Dan Gohman via Phabricator via cfe-commits]

sunfish created this revision.
Herald added subscribers: pmatos, asb, ecnelises, jgravelle-google, sbc100, 
dschuff.
Herald added a project: All.
sunfish requested review of this revision.
Herald added a subscriber: aheejin.
Herald added a project: clang.

Enable nontrapping-fptoint, sign-ext, bulk-memory, and mutable-globals in 
-mcpu=generic. This makes these features enabled by default.

These features are all [finished proposals], and all major wasm engines support 
them.

[finished proposals]: 
https://github.com/WebAssembly/proposals/blob/main/finished-proposals.md


Repository:
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https://reviews.llvm.org/D125728

Files:
  clang/lib/Basic/Targets/WebAssembly.cpp


Index: clang/lib/Basic/Targets/WebAssembly.cpp
===
--- clang/lib/Basic/Targets/WebAssembly.cpp
+++ clang/lib/Basic/Targets/WebAssembly.cpp
@@ -144,6 +144,11 @@
 Features["mutable-globals"] = true;
 Features["tail-call"] = true;
 setSIMDLevel(Features, SIMD128, true);
+  } else if (CPU == "generic") {
+Features["nontrapping-fptoint"] = true;
+Features["sign-ext"] = true;
+Features["bulk-memory"] = true;
+Features["mutable-globals"] = true;
   }
 
   return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);


Index: clang/lib/Basic/Targets/WebAssembly.cpp
===
--- clang/lib/Basic/Targets/WebAssembly.cpp
+++ clang/lib/Basic/Targets/WebAssembly.cpp
@@ -144,6 +144,11 @@
 Features["mutable-globals"] = true;
 Features["tail-call"] = true;
 setSIMDLevel(Features, SIMD128, true);
+  } else if (CPU == "generic") {
+Features["nontrapping-fptoint"] = true;
+Features["sign-ext"] = true;
+Features["bulk-memory"] = true;
+Features["mutable-globals"] = true;
   }
 
   return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
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