diff --git a/crates/core_arch/src/x86/abm.rs b/crates/core_arch/src/x86/abm.rs
index 59f3877b4a..b73076361d 100644
--- a/crates/core_arch/src/x86/abm.rs
+++ b/crates/core_arch/src/x86/abm.rs
@@ -12,8 +12,8 @@
 //! [Wikipedia][wikipedia_bmi] provides a quick overview of the instructions
 //! available.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
-//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [amd64_ref]: https://docs.amd.com/v/u/en-US/24594_3.37
 //! [wikipedia_bmi]:
 //! https://en.wikipedia.org/wiki/Bit_Manipulation_Instruction_Sets#ABM_.28Advanced_Bit_Manipulation.29
 
diff --git a/crates/core_arch/src/x86/aes.rs b/crates/core_arch/src/x86/aes.rs
index 7db743b2cc..be01d6ddd8 100644
--- a/crates/core_arch/src/x86/aes.rs
+++ b/crates/core_arch/src/x86/aes.rs
@@ -5,7 +5,7 @@
 //! The reference is [Intel 64 and IA-32 Architectures Software Developer's
 //! Manual Volume 2: Instruction Set Reference, A-Z][intel64_ref].
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 
 use crate::core_arch::x86::__m128i;
 
diff --git a/crates/core_arch/src/x86/avx.rs b/crates/core_arch/src/x86/avx.rs
index acba0a3db7..bda0b8ac50 100644
--- a/crates/core_arch/src/x86/avx.rs
+++ b/crates/core_arch/src/x86/avx.rs
@@ -10,7 +10,7 @@
 //! [Wikipedia][wiki] provides a quick overview of the instructions available.
 //!
 //! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
-//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
+//! [amd64_ref]: https://docs.amd.com/v/u/en-US/24594_3.37
 //! [wiki]: https://en.wikipedia.org/wiki/Advanced_Vector_Extensions
 
 use crate::{
diff --git a/crates/core_arch/src/x86/avx2.rs b/crates/core_arch/src/x86/avx2.rs
index b3b2accd73..a297544e9e 100644
--- a/crates/core_arch/src/x86/avx2.rs
+++ b/crates/core_arch/src/x86/avx2.rs
@@ -13,8 +13,8 @@
 //! Wikipedia's [AVX][wiki_avx] and [FMA][wiki_fma] pages provide a quick
 //! overview of the instructions available.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
-//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [amd64_ref]: https://docs.amd.com/v/u/en-US/24594_3.37
 //! [wiki_avx]: https://en.wikipedia.org/wiki/Advanced_Vector_Extensions
 //! [wiki_fma]: https://en.wikipedia.org/wiki/Fused_multiply-accumulate
 
diff --git a/crates/core_arch/src/x86/avx512bitalg.rs b/crates/core_arch/src/x86/avx512bitalg.rs
index 832a584322..497fa21c4f 100644
--- a/crates/core_arch/src/x86/avx512bitalg.rs
+++ b/crates/core_arch/src/x86/avx512bitalg.rs
@@ -5,7 +5,7 @@
 //! The reference is [Intel 64 and IA-32 Architectures Software Developer's
 //! Manual Volume 2: Instruction Set Reference, A-Z][intel64_ref].
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 
 use crate::core_arch::simd::i8x16;
 use crate::core_arch::simd::i8x32;
diff --git a/crates/core_arch/src/x86/avx512vpopcntdq.rs b/crates/core_arch/src/x86/avx512vpopcntdq.rs
index 42bff33a28..38ef54b550 100644
--- a/crates/core_arch/src/x86/avx512vpopcntdq.rs
+++ b/crates/core_arch/src/x86/avx512vpopcntdq.rs
@@ -5,7 +5,7 @@
 //! The reference is [Intel 64 and IA-32 Architectures Software Developer's
 //! Manual Volume 2: Instruction Set Reference, A-Z][intel64_ref].
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 
 use crate::core_arch::simd::*;
 use crate::core_arch::x86::__m128i;
diff --git a/crates/core_arch/src/x86/bmi1.rs b/crates/core_arch/src/x86/bmi1.rs
index 08444aaaed..11d66f699a 100644
--- a/crates/core_arch/src/x86/bmi1.rs
+++ b/crates/core_arch/src/x86/bmi1.rs
@@ -6,7 +6,7 @@
 //! [Wikipedia][wikipedia_bmi] provides a quick overview of the instructions
 //! available.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 //! [wikipedia_bmi]: https://en.wikipedia.org/wiki/Bit_Manipulation_Instruction_Sets#ABM_.28Advanced_Bit_Manipulation.29
 
 #[cfg(test)]
diff --git a/crates/core_arch/src/x86/bmi2.rs b/crates/core_arch/src/x86/bmi2.rs
index b5b7d0f340..54d3b5387e 100644
--- a/crates/core_arch/src/x86/bmi2.rs
+++ b/crates/core_arch/src/x86/bmi2.rs
@@ -6,7 +6,7 @@
 //! [Wikipedia][wikipedia_bmi] provides a quick overview of the instructions
 //! available.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 //! [wikipedia_bmi]:
 //! https://en.wikipedia.org/wiki/Bit_Manipulation_Instruction_Sets#ABM_.28Advanced_Bit_Manipulation.29
 
diff --git a/crates/core_arch/src/x86/cpuid.rs b/crates/core_arch/src/x86/cpuid.rs
index b35699bd7a..3f13ea8369 100644
--- a/crates/core_arch/src/x86/cpuid.rs
+++ b/crates/core_arch/src/x86/cpuid.rs
@@ -54,7 +54,7 @@ pub struct CpuidResult {
 ///
 /// [wiki_cpuid]: https://en.wikipedia.org/wiki/CPUID
 /// [intel64_ref]: https://cdrdv2-public.intel.com/671110/325383-sdm-vol-2abcd.pdf
-/// [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
+/// [amd64_ref]: https://docs.amd.com/v/u/en-US/24594_3.37
 #[inline]
 #[cfg_attr(test, assert_instr(cpuid))]
 #[stable(feature = "simd_x86", since = "1.27.0")]
diff --git a/crates/core_arch/src/x86/fma.rs b/crates/core_arch/src/x86/fma.rs
index abf79f4904..c0900e61d9 100644
--- a/crates/core_arch/src/x86/fma.rs
+++ b/crates/core_arch/src/x86/fma.rs
@@ -14,8 +14,8 @@
 //! Wikipedia's [FMA][wiki_fma] page provides a quick overview of the
 //! instructions available.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
-//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [amd64_ref]: https://docs.amd.com/v/u/en-US/24594_3.37
 //! [wiki_fma]: https://en.wikipedia.org/wiki/Fused_multiply-accumulate
 
 use crate::core_arch::x86::*;
diff --git a/crates/core_arch/src/x86/gfni.rs b/crates/core_arch/src/x86/gfni.rs
index 8c4d097fee..681b8ae330 100644
--- a/crates/core_arch/src/x86/gfni.rs
+++ b/crates/core_arch/src/x86/gfni.rs
@@ -5,7 +5,7 @@
 //! The reference is [Intel 64 and IA-32 Architectures Software Developer's
 //! Manual Volume 2: Instruction Set Reference, A-Z][intel64_ref].
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 
 use crate::core_arch::simd::i8x16;
 use crate::core_arch::simd::i8x32;
diff --git a/crates/core_arch/src/x86/rtm.rs b/crates/core_arch/src/x86/rtm.rs
index b807305d6a..b37e7571eb 100644
--- a/crates/core_arch/src/x86/rtm.rs
+++ b/crates/core_arch/src/x86/rtm.rs
@@ -9,7 +9,7 @@
 //! Intel's [programming considerations][intel_consid] details what sorts of instructions within a
 //! transaction are likely to cause an abort.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 //! [wikipedia_rtm]: https://en.wikipedia.org/wiki/Transactional_Synchronization_Extensions#Restricted_Transactional_Memory
 //! [intel_consid]: https://software.intel.com/en-us/cpp-compiler-developer-guide-and-reference-intel-transactional-synchronization-extensions-intel-tsx-programming-considerations
 
diff --git a/crates/core_arch/src/x86/tbm.rs b/crates/core_arch/src/x86/tbm.rs
index d7769b916d..1e863fe15c 100644
--- a/crates/core_arch/src/x86/tbm.rs
+++ b/crates/core_arch/src/x86/tbm.rs
@@ -6,7 +6,7 @@
 //! [Wikipedia][wikipedia_bmi] provides a quick overview of the available
 //! instructions.
 //!
-//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
+//! [amd64_ref]: https://docs.amd.com/v/u/en-US/24594_3.37
 //! [wikipedia_bmi]:
 //! https://en.wikipedia.org/wiki/Bit_Manipulation_Instruction_Sets#ABM_.28Advanced_Bit_Manipulation.29
 
diff --git a/crates/core_arch/src/x86/vaes.rs b/crates/core_arch/src/x86/vaes.rs
index b1fe193e3f..561b8b4b30 100644
--- a/crates/core_arch/src/x86/vaes.rs
+++ b/crates/core_arch/src/x86/vaes.rs
@@ -5,7 +5,7 @@
 //! The reference is [Intel 64 and IA-32 Architectures Software Developer's
 //! Manual Volume 2: Instruction Set Reference, A-Z][intel64_ref].
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 
 use crate::core_arch::x86::__m256i;
 use crate::core_arch::x86::__m512i;
diff --git a/crates/core_arch/src/x86_64/abm.rs b/crates/core_arch/src/x86_64/abm.rs
index 63e422864d..9fb76be4ba 100644
--- a/crates/core_arch/src/x86_64/abm.rs
+++ b/crates/core_arch/src/x86_64/abm.rs
@@ -12,8 +12,8 @@
 //! [Wikipedia][wikipedia_bmi] provides a quick overview of the instructions
 //! available.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
-//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [amd64_ref]: https://docs.amd.com/v/u/en-US/24594_3.37
 //! [wikipedia_bmi]:
 //! https://en.wikipedia.org/wiki/Bit_Manipulation_Instruction_Sets#ABM_.28Advanced_Bit_Manipulation.29
 
diff --git a/crates/core_arch/src/x86_64/avx.rs b/crates/core_arch/src/x86_64/avx.rs
index bb8d256207..aae3c981d6 100644
--- a/crates/core_arch/src/x86_64/avx.rs
+++ b/crates/core_arch/src/x86_64/avx.rs
@@ -9,8 +9,8 @@
 //!
 //! [Wikipedia][wiki] provides a quick overview of the instructions available.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
-//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [amd64_ref]: https://docs.amd.com/v/u/en-US/24594_3.37
 //! [wiki]: https://en.wikipedia.org/wiki/Advanced_Vector_Extensions
 
 use crate::{core_arch::x86::*, mem::transmute};
diff --git a/crates/core_arch/src/x86_64/bmi.rs b/crates/core_arch/src/x86_64/bmi.rs
index ee41d41375..d5fd97583f 100644
--- a/crates/core_arch/src/x86_64/bmi.rs
+++ b/crates/core_arch/src/x86_64/bmi.rs
@@ -6,7 +6,7 @@
 //! [Wikipedia][wikipedia_bmi] provides a quick overview of the instructions
 //! available.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 //! [wikipedia_bmi]: https://en.wikipedia.org/wiki/Bit_Manipulation_Instruction_Sets#ABM_.28Advanced_Bit_Manipulation.29
 
 #[cfg(test)]
diff --git a/crates/core_arch/src/x86_64/bmi2.rs b/crates/core_arch/src/x86_64/bmi2.rs
index 4eb53ed5ea..be12465c81 100644
--- a/crates/core_arch/src/x86_64/bmi2.rs
+++ b/crates/core_arch/src/x86_64/bmi2.rs
@@ -6,7 +6,7 @@
 //! [Wikipedia][wikipedia_bmi] provides a quick overview of the instructions
 //! available.
 //!
-//! [intel64_ref]: http://www.intel.de/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
+//! [intel64_ref]: https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-instruction-set-reference-manual-325383.pdf
 //! [wikipedia_bmi]:
 //! https://en.wikipedia.org/wiki/Bit_Manipulation_Instruction_Sets#ABM_.28Advanced_Bit_Manipulation.29
 
diff --git a/crates/core_arch/src/x86_64/tbm.rs b/crates/core_arch/src/x86_64/tbm.rs
index e7d4b8d3e4..031bd32071 100644
--- a/crates/core_arch/src/x86_64/tbm.rs
+++ b/crates/core_arch/src/x86_64/tbm.rs
@@ -6,7 +6,7 @@
 //! [Wikipedia][wikipedia_bmi] provides a quick overview of the available
 //! instructions.
 //!
-//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf
+//! [amd64_ref]: https://docs.amd.com/v/u/en-US/24594_3.37
 //! [wikipedia_bmi]:
 //! https://en.wikipedia.org/wiki/Bit_Manipulation_Instruction_Sets#ABM_.28Advanced_Bit_Manipulation.29