[NFC][Clang][Headers] Update refs to ACLE in comments (llvm#78305)

Co-authored-by: Max Iyengar <[email protected]>

Author: vhscampos

clang/lib/Headers/arm_acle.h

@@ -4,6 +4,13 @@
  * See https://llvm.org/LICENSE.txt for license information.
  * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  *
+ * The Arm C Language Extensions specifications can be found in the following
+ * link: https://github.com/ARM-software/acle/releases
+ *
+ * The ACLE section numbers are subject to change. When consulting the
+ * specifications, it is recommended to search using section titles if
+ * the section numbers look outdated.
+ *
  *===-----------------------------------------------------------------------===
  */
 
@@ -20,8 +27,8 @@
 extern "C" {
 #endif
 
-/* 8 SYNCHRONIZATION, BARRIER AND HINT INTRINSICS */
-/* 8.3 Memory barriers */
+/* 7 SYNCHRONIZATION, BARRIER AND HINT INTRINSICS */
+/* 7.3 Memory barriers */
 #if !__has_builtin(__dmb)
 #define __dmb(i) __builtin_arm_dmb(i)
 #endif
@@ -32,7 +39,7 @@ extern "C" {
 #define __isb(i) __builtin_arm_isb(i)
 #endif
 
-/* 8.4 Hints */
+/* 7.4 Hints */
 
 #if !__has_builtin(__wfi)
 static __inline__ void __attribute__((__always_inline__, __nodebug__)) __wfi(void) {
@@ -68,7 +75,7 @@ static __inline__ void __attribute__((__always_inline__, __nodebug__)) __yield(v
 #define __dbg(t) __builtin_arm_dbg(t)
 #endif
 
-/* 8.5 Swap */
+/* 7.5 Swap */
 static __inline__ uint32_t __attribute__((__always_inline__, __nodebug__))
 __swp(uint32_t __x, volatile uint32_t *__p) {
   uint32_t v;
@@ -78,8 +85,8 @@ __swp(uint32_t __x, volatile uint32_t *__p) {
   return v;
 }
 
-/* 8.6 Memory prefetch intrinsics */
-/* 8.6.1 Data prefetch */
+/* 7.6 Memory prefetch intrinsics */
+/* 7.6.1 Data prefetch */
 #define __pld(addr) __pldx(0, 0, 0, addr)
 
 #if defined(__ARM_32BIT_STATE) && __ARM_32BIT_STATE
@@ -90,7 +97,7 @@ __swp(uint32_t __x, volatile uint32_t *__p) {
   __builtin_arm_prefetch(addr, access_kind, cache_level, retention_policy, 1)
 #endif
 
-/* 8.6.2 Instruction prefetch */
+/* 7.6.2 Instruction prefetch */
 #define __pli(addr) __plix(0, 0, addr)
 
 #if defined(__ARM_32BIT_STATE) && __ARM_32BIT_STATE
@@ -101,15 +108,15 @@ __swp(uint32_t __x, volatile uint32_t *__p) {
   __builtin_arm_prefetch(addr, 0, cache_level, retention_policy, 0)
 #endif
 
-/* 8.7 NOP */
+/* 7.7 NOP */
 #if !defined(_MSC_VER) || !defined(__aarch64__)
 static __inline__ void __attribute__((__always_inline__, __nodebug__)) __nop(void) {
   __builtin_arm_nop();
 }
 #endif
 
-/* 9 DATA-PROCESSING INTRINSICS */
-/* 9.2 Miscellaneous data-processing intrinsics */
+/* 8 DATA-PROCESSING INTRINSICS */
+/* 8.2 Miscellaneous data-processing intrinsics */
 /* ROR */
 static __inline__ uint32_t __attribute__((__always_inline__, __nodebug__))
 __ror(uint32_t __x, uint32_t __y) {
@@ -248,9 +255,7 @@ __rbitl(unsigned long __t) {
 #endif
 }
 
-/*
- * 9.3 16-bit multiplications
- */
+/* 8.3 16-bit multiplications */
 #if defined(__ARM_FEATURE_DSP) && __ARM_FEATURE_DSP
 static __inline__ int32_t __attribute__((__always_inline__,__nodebug__))
 __smulbb(int32_t __a, int32_t __b) {
@@ -279,18 +284,18 @@ __smulwt(int32_t __a, int32_t __b) {
 #endif
 
 /*
- * 9.4 Saturating intrinsics
+ * 8.4 Saturating intrinsics
  *
  * FIXME: Change guard to their corresponding __ARM_FEATURE flag when Q flag
  * intrinsics are implemented and the flag is enabled.
  */
-/* 9.4.1 Width-specified saturation intrinsics */
+/* 8.4.1 Width-specified saturation intrinsics */
 #if defined(__ARM_FEATURE_SAT) && __ARM_FEATURE_SAT
 #define __ssat(x, y) __builtin_arm_ssat(x, y)
 #define __usat(x, y) __builtin_arm_usat(x, y)
 #endif
 
-/* 9.4.2 Saturating addition and subtraction intrinsics */
+/* 8.4.2 Saturating addition and subtraction intrinsics */
 #if defined(__ARM_FEATURE_DSP) && __ARM_FEATURE_DSP
 static __inline__ int32_t __attribute__((__always_inline__, __nodebug__))
 __qadd(int32_t __t, int32_t __v) {
@@ -308,7 +313,7 @@ __qdbl(int32_t __t) {
 }
 #endif
 
-/* 9.4.3 Accumultating multiplications */
+/* 8.4.3 Accumultating multiplications */
 #if defined(__ARM_FEATURE_DSP) && __ARM_FEATURE_DSP
 static __inline__ int32_t __attribute__((__always_inline__, __nodebug__))
 __smlabb(int32_t __a, int32_t __b, int32_t __c) {
@@ -337,13 +342,13 @@ __smlawt(int32_t __a, int32_t __b, int32_t __c) {
 #endif
 
 
-/* 9.5.4 Parallel 16-bit saturation */
+/* 8.5.4 Parallel 16-bit saturation */
 #if defined(__ARM_FEATURE_SIMD32) && __ARM_FEATURE_SIMD32
 #define __ssat16(x, y) __builtin_arm_ssat16(x, y)
 #define __usat16(x, y) __builtin_arm_usat16(x, y)
 #endif
 
-/* 9.5.5 Packing and unpacking */
+/* 8.5.5 Packing and unpacking */
 #if defined(__ARM_FEATURE_SIMD32) && __ARM_FEATURE_SIMD32
 typedef int32_t int8x4_t;
 typedef int32_t int16x2_t;
@@ -368,15 +373,15 @@ __uxtb16(int8x4_t __a) {
 }
 #endif
 
-/* 9.5.6 Parallel selection */
+/* 8.5.6 Parallel selection */
 #if defined(__ARM_FEATURE_SIMD32) && __ARM_FEATURE_SIMD32
 static __inline__ uint8x4_t __attribute__((__always_inline__, __nodebug__))
 __sel(uint8x4_t __a, uint8x4_t __b) {
   return __builtin_arm_sel(__a, __b);
 }
 #endif
 
-/* 9.5.7 Parallel 8-bit addition and subtraction */
+/* 8.5.7 Parallel 8-bit addition and subtraction */
 #if defined(__ARM_FEATURE_SIMD32) && __ARM_FEATURE_SIMD32
 static __inline__ int8x4_t __attribute__((__always_inline__, __nodebug__))
 __qadd8(int8x4_t __a, int8x4_t __b) {
@@ -428,7 +433,7 @@ __usub8(uint8x4_t __a, uint8x4_t __b) {
 }
 #endif
 
-/* 9.5.8 Sum of 8-bit absolute differences */
+/* 8.5.8 Sum of 8-bit absolute differences */
 #if defined(__ARM_FEATURE_SIMD32) && __ARM_FEATURE_SIMD32
 static __inline__ uint32_t __attribute__((__always_inline__, __nodebug__))
 __usad8(uint8x4_t __a, uint8x4_t __b) {
@@ -440,7 +445,7 @@ __usada8(uint8x4_t __a, uint8x4_t __b, uint32_t __c) {
 }
 #endif
 
-/* 9.5.9 Parallel 16-bit addition and subtraction */
+/* 8.5.9 Parallel 16-bit addition and subtraction */
 #if defined(__ARM_FEATURE_SIMD32) && __ARM_FEATURE_SIMD32
 static __inline__ int16x2_t __attribute__((__always_inline__, __nodebug__))
 __qadd16(int16x2_t __a, int16x2_t __b) {
@@ -540,7 +545,7 @@ __usub16(uint16x2_t __a, uint16x2_t __b) {
 }
 #endif
 
-/* 9.5.10 Parallel 16-bit multiplications */
+/* 8.5.10 Parallel 16-bit multiplications */
 #if defined(__ARM_FEATURE_SIMD32) && __ARM_FEATURE_SIMD32
 static __inline__ int32_t __attribute__((__always_inline__, __nodebug__))
 __smlad(int16x2_t __a, int16x2_t __b, int32_t __c) {
@@ -607,7 +612,7 @@ __rintnf(float __a) {
 }
 #endif
 
-/* 9.7 CRC32 intrinsics */
+/* 8.8 CRC32 intrinsics */
 #if (defined(__ARM_FEATURE_CRC32) && __ARM_FEATURE_CRC32) ||                   \
     (defined(__ARM_64BIT_STATE) && __ARM_64BIT_STATE)
 static __inline__ uint32_t __attribute__((__always_inline__, __nodebug__, target("crc")))
@@ -651,6 +656,7 @@ __crc32cd(uint32_t __a, uint64_t __b) {
 }
 #endif
 
+/* 8.6 Floating-point data-processing intrinsics */
 /* Armv8.3-A Javascript conversion intrinsic */
 #if defined(__ARM_64BIT_STATE) && __ARM_64BIT_STATE
 static __inline__ int32_t __attribute__((__always_inline__, __nodebug__, target("v8.3a")))
@@ -702,7 +708,7 @@ __rint64x(double __a) {
 }
 #endif
 
-/* Armv8.7-A load/store 64-byte intrinsics */
+/* 8.9 Armv8.7-A load/store 64-byte intrinsics */
 #if defined(__ARM_64BIT_STATE) && __ARM_64BIT_STATE
 typedef struct {
     uint64_t val[8];
@@ -728,7 +734,7 @@ __arm_st64bv0(void *__addr, data512_t __value) {
 }
 #endif
 
-/* 10.1 Special register intrinsics */
+/* 11.1 Special register intrinsics */
 #define __arm_rsr(sysreg) __builtin_arm_rsr(sysreg)
 #define __arm_rsr64(sysreg) __builtin_arm_rsr64(sysreg)
 #define __arm_rsr128(sysreg) __builtin_arm_rsr128(sysreg)
@@ -742,7 +748,7 @@ __arm_st64bv0(void *__addr, data512_t __value) {
 #define __arm_wsrf(sysreg, v) __arm_wsr(sysreg, __builtin_bit_cast(uint32_t, v))
 #define __arm_wsrf64(sysreg, v) __arm_wsr64(sysreg, __builtin_bit_cast(uint64_t, v))
 
-/* Memory Tagging Extensions (MTE) Intrinsics */
+/* 10.3 Memory Tagging Extensions (MTE) Intrinsics */
 #if defined(__ARM_64BIT_STATE) && __ARM_64BIT_STATE
 #define __arm_mte_create_random_tag(__ptr, __mask)  __builtin_arm_irg(__ptr, __mask)
 #define __arm_mte_increment_tag(__ptr, __tag_offset)  __builtin_arm_addg(__ptr, __tag_offset)
@@ -751,12 +757,12 @@ __arm_st64bv0(void *__addr, data512_t __value) {
 #define __arm_mte_set_tag(__ptr) __builtin_arm_stg(__ptr)
 #define __arm_mte_ptrdiff(__ptra, __ptrb) __builtin_arm_subp(__ptra, __ptrb)
 
-/* Memory Operations Intrinsics */
+/* 18 Memory Operations Intrinsics */
 #define __arm_mops_memset_tag(__tagged_address, __value, __size)    \
   __builtin_arm_mops_memset_tag(__tagged_address, __value, __size)
 #endif
 
-/* Coprocessor Intrinsics */
+/* 11.3 Coprocessor Intrinsics */
 #if defined(__ARM_FEATURE_COPROC)
 
 #if (__ARM_FEATURE_COPROC & 0x1)
@@ -815,7 +821,7 @@ __arm_st64bv0(void *__addr, data512_t __value) {
 
 #endif // __ARM_FEATURE_COPROC
 
-/* Transactional Memory Extension (TME) Intrinsics */
+/* 17 Transactional Memory Extension (TME) Intrinsics */
 #if defined(__ARM_FEATURE_TME) && __ARM_FEATURE_TME
 
 #define _TMFAILURE_REASON  0x00007fffu
@@ -837,7 +843,7 @@ __arm_st64bv0(void *__addr, data512_t __value) {
 
 #endif /* __ARM_FEATURE_TME */
 
-/* Armv8.5-A Random number generation intrinsics */
+/* 8.7 Armv8.5-A Random number generation intrinsics */
 #if defined(__ARM_64BIT_STATE) && __ARM_64BIT_STATE
 static __inline__ int __attribute__((__always_inline__, __nodebug__, target("rand")))
 __rndr(uint64_t *__p) {