Bug 1927242 - Update wasi-libc build-time check for latest LLVM trunk…

…. r=firefox-build-system-reviewers,ahochheiden

Submitted upstream at WebAssembly/wasi-libc#546

Differential Revision: https://phabricator.services.mozilla.com/D228232

UltraBlame original commit: 9a4d10439e8016ab83773c94681e1b5c8ac5b5c2

taskcluster/scripts/misc/wasi-sdk.patch

@@ -42,7 +42,7 @@ index f350ecb..3b73115 100644
  	grep '^_*imported_wasi_' "$(UNDEFINED_SYMBOLS)" \
  	    > "$(SYSROOT_LIB)/libc.imports"
 
-@@ -671,10 +671,18 @@ check-symbols: startup_files libc
+@@ -671,10 +671,20 @@ check-symbols: startup_files libc
  	@#
  	@# TODO: Filter out __NO_MATH_ERRNO_ and a few __*WIDTH__ that are new to clang 14.
  	@# TODO: Filter out __GCC_HAVE_SYNC_COMPARE_AND_SWAP_* that are new to clang 16.
@@ -58,19 +58,23 @@ index f350ecb..3b73115 100644
  	@# clang 16 for -mcpu=generic.
 +	@# TODO: Undefine __wasm_multivalue__ and __wasm_reference_types__, that are new to
 +	@# clang 19 for -mcpu=generic.
++	@# TODO: Undefine __wasm_nontrapping_fptoint__ and __wasm_bulk_memory__, that are
++	@# new to clang 20.
  	@# TODO: As of clang 16, __GNUC_VA_LIST is #defined without a value.
  	$(CC) $(CFLAGS) "$(SYSROOT_SHARE)/include-all.c" \
  	    -isystem $(SYSROOT_INC) \
-@@ -691,6 +698,8 @@ check-symbols: startup_files libc
+@@ -691,6 +700,10 @@ check-symbols: startup_files libc
  	    -U__clang_wide_literal_encoding__ \
  	    -U__wasm_mutable_globals__ \
  	    -U__wasm_sign_ext__ \
 +	    -U__wasm_multivalue__ \
 +	    -U__wasm_reference_types__ \
++	    -U__wasm_nontrapping_fptoint__ \
++	    $(if $(filter-out wasm32-wasi-threads,$(TARGET_TRIPLE)),-U__wasm_bulk_memory__) \
  	    -U__GNUC__ \
  	    -U__GNUC_MINOR__ \
  	    -U__GNUC_PATCHLEVEL__ \
-@@ -702,6 +712,12 @@ check-symbols: startup_files libc
+@@ -702,6 +716,12 @@ check-symbols: startup_files libc
  	    | sed -e 's/__GNUC_VA_LIST $$/__GNUC_VA_LIST 1/' \
  	    | grep -v '^#define __\(BOOL\|INT_\(LEAST\|FAST\)\(8\|16\|32\|64\)\|INT\|LONG\|LLONG\|SHRT\)_WIDTH__' \
  	    | grep -v '^#define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_\(1\|2\|4\|8\)' \