[clang] 0bab742 - [X86] Add missing CET intrinsics support

[Freddy Ye via cfe-commits]

Author: Freddy Ye
Date: 2022-01-04T11:40:40+08:00
New Revision: 0bab7428057048d94774a91c329ae902fcffc170

URL: https://github.com/llvm/llvm-project/commit/0bab7428057048d94774a91c329ae902fcffc170
DIFF: https://github.com/llvm/llvm-project/commit/0bab7428057048d94774a91c329ae902fcffc170.diff

LOG: [X86] Add missing CET intrinsics support

These two intrinsics are documented o SDM and intrinsic guide.

Reviewed By: pengfei

Differential Revision: https://reviews.llvm.org/D116325

Added: 
    

Modified: 
    clang/lib/Headers/cetintrin.h
    clang/test/CodeGen/X86/cetintrin.c

Removed: 
    


################################################################################
diff  --git a/clang/lib/Headers/cetintrin.h b/clang/lib/Headers/cetintrin.h
index 4290e9d7355b9..019cab0261e7f 100644
--- a/clang/lib/Headers/cetintrin.h
+++ b/clang/lib/Headers/cetintrin.h
@@ -42,10 +42,20 @@ static __inline__ unsigned int __DEFAULT_FN_ATTRS _rdsspd(unsigned int __a) {
   return __builtin_ia32_rdsspd(__a);
 }
 
+static __inline__ unsigned int __DEFAULT_FN_ATTRS _rdsspd_i32() {
+  unsigned int t;
+  return __builtin_ia32_rdsspd(t);
+}
+
 #ifdef __x86_64__
 static __inline__ unsigned long long __DEFAULT_FN_ATTRS _rdsspq(unsigned long long __a) {
   return __builtin_ia32_rdsspq(__a);
 }
+
+static __inline__ unsigned long long __DEFAULT_FN_ATTRS _rdsspq_i64() {
+  unsigned long long t;
+  return __builtin_ia32_rdsspq(t);
+}
 #endif /* __x86_64__ */
 
 #ifdef __x86_64__

diff  --git a/clang/test/CodeGen/X86/cetintrin.c b/clang/test/CodeGen/X86/cetintrin.c
index f70d1c80e1cfe..dc55745ec4508 100644
--- a/clang/test/CodeGen/X86/cetintrin.c
+++ b/clang/test/CodeGen/X86/cetintrin.c
@@ -37,6 +37,12 @@ unsigned int test_rdsspd(unsigned int a) {
   return _rdsspd(a);
 }
 
+unsigned int test_rdsspd_i32() {
+  // CHECK-LABEL: @test_rdsspd_i32
+  // CHECK:       call i32 @llvm.x86.rdsspd(i32 %{{[a-z0-9.]+}})
+  return _rdsspd_i32();
+}
+
 #ifdef __x86_64__
 unsigned long long test_rdsspq(unsigned long long a) {
   // X86_64-LABEL: @test_rdsspq
@@ -44,6 +50,12 @@ unsigned long long test_rdsspq(unsigned long long a) {
   return _rdsspq(a);
 }
 
+unsigned long long test_rdsspq_i64() {
+  // X86_64-LABEL: @test_rdsspq_i64
+  // X86_64:       call i64 @llvm.x86.rdsspq(i64 %{{[a-z0-9.]+}})
+  return _rdsspq_i64();
+}
+
 unsigned long long test_get_ssp(void) {
   // X86_64-LABEL: @test_get_ssp
   // X86_64:       call i64 @llvm.x86.rdsspq(i64 0)