[clang] [Clang][AArch64] Add missing prototypes for streaming-compatible rout… (PR #82649)

[Sander de Smalen via cfe-commits]

https://github.com/sdesmalen-arm created https://github.com/llvm/llvm-project/pull/82649

…ines

>From 6b75aabe4e098d5faef01cacb5b00e5b59231a3b Mon Sep 17 00:00:00 2001
From: Sander de Smalen <sander.desmalen at arm.com>
Date: Wed, 21 Feb 2024 12:23:21 +0000
Subject: [PATCH] [Clang][AArch64] Add missing prototypes for
 streaming-compatible routines

---
 .../acle_sme_state_funs.c                     | 59 ++++++++++++++++++-
 clang/utils/TableGen/SveEmitter.cpp           |  6 ++
 2 files changed, 63 insertions(+), 2 deletions(-)

diff --git a/clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_state_funs.c b/clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_state_funs.c
index dc07efbb816038..e80a965394e7f0 100644
--- a/clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_state_funs.c
+++ b/clang/test/CodeGen/aarch64-sme-intrinsics/acle_sme_state_funs.c
@@ -28,12 +28,12 @@ bool test_in_streaming_mode(void) __arm_streaming_compatible {
 
 // CHECK-LABEL: @test_za_disable(
 // CHECK-NEXT:  entry:
-// CHECK-NEXT:    tail call void @__arm_za_disable() #[[ATTR4:[0-9]+]]
+// CHECK-NEXT:    tail call void @__arm_za_disable() #[[ATTR3]]
 // CHECK-NEXT:    ret void
 //
 // CPP-CHECK-LABEL: @_Z15test_za_disablev(
 // CPP-CHECK-NEXT:  entry:
-// CPP-CHECK-NEXT:    tail call void @__arm_za_disable() #[[ATTR4:[0-9]+]]
+// CPP-CHECK-NEXT:    tail call void @__arm_za_disable() #[[ATTR3]]
 // CPP-CHECK-NEXT:    ret void
 //
 void test_za_disable(void) __arm_streaming_compatible {
@@ -70,3 +70,58 @@ void test_svundef_za(void) __arm_streaming_compatible __arm_out("za") {
   svundef_za();
 }
 
+// CHECK-LABEL: @test_sc_memcpy(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[CALL:%.*]] = tail call ptr @__arm_sc_memcpy(ptr noundef [[DEST:%.*]], ptr noundef [[SRC:%.*]], i64 noundef [[N:%.*]]) #[[ATTR3]]
+// CHECK-NEXT:    ret ptr [[CALL]]
+//
+// CPP-CHECK-LABEL: @_Z14test_sc_memcpyPvPKvm(
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    [[CALL:%.*]] = tail call ptr @__arm_sc_memcpy(ptr noundef [[DEST:%.*]], ptr noundef [[SRC:%.*]], i64 noundef [[N:%.*]]) #[[ATTR3]]
+// CPP-CHECK-NEXT:    ret ptr [[CALL]]
+//
+void *test_sc_memcpy(void *dest, const void *src, size_t n) __arm_streaming_compatible {
+  return __arm_sc_memcpy(dest, src, n);
+}
+
+// CHECK-LABEL: @test_sc_memmove(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[CALL:%.*]] = tail call ptr @__arm_sc_memmove(ptr noundef [[DEST:%.*]], ptr noundef [[SRC:%.*]], i64 noundef [[N:%.*]]) #[[ATTR3]]
+// CHECK-NEXT:    ret ptr [[CALL]]
+//
+// CPP-CHECK-LABEL: @_Z15test_sc_memmovePvPKvm(
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    [[CALL:%.*]] = tail call ptr @__arm_sc_memmove(ptr noundef [[DEST:%.*]], ptr noundef [[SRC:%.*]], i64 noundef [[N:%.*]]) #[[ATTR3]]
+// CPP-CHECK-NEXT:    ret ptr [[CALL]]
+//
+void *test_sc_memmove(void *dest, const void *src, size_t n) __arm_streaming_compatible {
+  return __arm_sc_memmove(dest, src, n);
+}
+
+// CHECK-LABEL: @test_sc_memset(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[CALL:%.*]] = tail call ptr @__arm_sc_memset(ptr noundef [[S:%.*]], i32 noundef [[C:%.*]], i64 noundef [[N:%.*]]) #[[ATTR3]]
+// CHECK-NEXT:    ret ptr [[CALL]]
+//
+// CPP-CHECK-LABEL: @_Z14test_sc_memsetPvim(
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    [[CALL:%.*]] = tail call ptr @__arm_sc_memset(ptr noundef [[S:%.*]], i32 noundef [[C:%.*]], i64 noundef [[N:%.*]]) #[[ATTR3]]
+// CPP-CHECK-NEXT:    ret ptr [[CALL]]
+//
+void *test_sc_memset(void *s, int c, size_t n) __arm_streaming_compatible {
+  return __arm_sc_memset(s, c, n);
+}
+
+// CHECK-LABEL: @test_sc_memchr(
+// CHECK-NEXT:  entry:
+// CHECK-NEXT:    [[CALL:%.*]] = tail call ptr @__arm_sc_memchr(ptr noundef [[S:%.*]], i32 noundef [[C:%.*]], i64 noundef [[N:%.*]]) #[[ATTR3]]
+// CHECK-NEXT:    ret ptr [[CALL]]
+//
+// CPP-CHECK-LABEL: @_Z14test_sc_memchrPvim(
+// CPP-CHECK-NEXT:  entry:
+// CPP-CHECK-NEXT:    [[CALL:%.*]] = tail call ptr @__arm_sc_memchr(ptr noundef [[S:%.*]], i32 noundef [[C:%.*]], i64 noundef [[N:%.*]]) #[[ATTR3]]
+// CPP-CHECK-NEXT:    ret ptr [[CALL]]
+//
+void *test_sc_memchr(void *s, int c, size_t n) __arm_streaming_compatible {
+  return __arm_sc_memchr(s, c, n);
+}
diff --git a/clang/utils/TableGen/SveEmitter.cpp b/clang/utils/TableGen/SveEmitter.cpp
index 174304f09007bf..131397e3825b02 100644
--- a/clang/utils/TableGen/SveEmitter.cpp
+++ b/clang/utils/TableGen/SveEmitter.cpp
@@ -1579,6 +1579,7 @@ void SVEEmitter::createSMEHeader(raw_ostream &OS) {
   OS << "#endif\n";
 
   OS << "#include <arm_sve.h>\n\n";
+  OS << "#include <stddef.h>\n\n";
 
   OS << "/* Function attributes */\n";
   OS << "#define __ai static __inline__ __attribute__((__always_inline__, "
@@ -1605,6 +1606,11 @@ void SVEEmitter::createSMEHeader(raw_ostream &OS) {
   OS << "  return x0 & 1;\n";
   OS << "}\n\n";
 
+  OS << "void *__arm_sc_memcpy(void *dest, const void *src, size_t n) __arm_streaming_compatible;\n";
+  OS << "void *__arm_sc_memmove(void *dest, const void *src, size_t n) __arm_streaming_compatible;\n";
+  OS << "void *__arm_sc_memset(void *s, int c, size_t n) __arm_streaming_compatible;\n";
+  OS << "void *__arm_sc_memchr(void *s, int c, size_t n) __arm_streaming_compatible;\n\n";
+
   OS << "__ai __attribute__((target(\"sme\"))) void svundef_za(void) "
         "__arm_streaming_compatible __arm_out(\"za\") "
         "{ }\n\n";