diff --git a/Cargo.lock b/Cargo.lock
index 901d1dbea66..74e7afee7bc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -45,18 +45,18 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "cranelift-bforest"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76eb38f2af690b5a4411d9a8782b6d77dabff3ca939e0518453ab9f9a4392d41"
+checksum = "7c22542c0b95bd3302f7ed6839869c561f2324bac2fd5e7e99f5cfa65fdc8b92"
 dependencies = [
  "cranelift-entity",
 ]
 
 [[package]]
 name = "cranelift-codegen"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "39526c036b92912417e8931f52c1e235796688068d3efdbbd8b164f299d19156"
+checksum = "6b3db903ef2e9c8a4de2ea6db5db052c7857282952f9df604aa55d169e6000d8"
 dependencies = [
  "bumpalo",
  "cranelift-bforest",
@@ -75,39 +75,39 @@ dependencies = [
 
 [[package]]
 name = "cranelift-codegen-meta"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fdb0deedc9fccf2db53a5a3c9c9d0163e44143b0d004dca9bf6ab6a0024cd79a"
+checksum = "6590feb5a1d6438f974bf6a5ac4dddf69fca14e1f07f3265d880f69e61a94463"
 dependencies = [
  "cranelift-codegen-shared",
 ]
 
 [[package]]
 name = "cranelift-codegen-shared"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cea2d1b274e45aa8e61e9103efa1ba82d4b5a19d12bd1fd10744c3b7380ba3ff"
+checksum = "7239038c56fafe77fddc8788fc8533dd6c474dc5bdc5637216404f41ba807330"
 
 [[package]]
 name = "cranelift-control"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ea5977559a71e63db79a263f0e81a89b996e8a38212c4281e37dd1dbaa8b65c"
+checksum = "f7dc9c595341404d381d27a3d950160856b35b402275f0c3990cd1ad683c8053"
 dependencies = [
  "arbitrary",
 ]
 
 [[package]]
 name = "cranelift-entity"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f871ada808b58158d84dfc43a6a2e2d2756baaf4ed1c51fd969ca8330e6ca5c"
+checksum = "44e3ee532fc4776c69bcedf7e62f9632cbb3f35776fa9a525cdade3195baa3f7"
 
 [[package]]
 name = "cranelift-frontend"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8e6890f587ef59824b3debe577e68fdf9b307b3808c54b8d93a18fd0b70941b"
+checksum = "a612c94d09e653662ec37681dc2d6fd2b9856e6df7147be0afc9aabb0abf19df"
 dependencies = [
  "cranelift-codegen",
  "log",
@@ -117,15 +117,15 @@ dependencies = [
 
 [[package]]
 name = "cranelift-isle"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a8d5fc6d5d3b52d1917002b17a8ecce448c2621b5bf394bb4e77e2f676893537"
+checksum = "85db9830abeb1170b7d29b536ffd55af1d4d26ac8a77570b5d1aca003bf225cc"
 
 [[package]]
 name = "cranelift-jit"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8a2d7744f743f59d9646d7589ad22ea17ed0d71e04906eb77c31e99bc13bd8b"
+checksum = "4946271f1055e26544ef8c90fa24776f201566419dfac4b3962c39d5a804ff67"
 dependencies = [
  "anyhow",
  "cranelift-codegen",
@@ -143,9 +143,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-module"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b96cb196334698e612c197d7d0ae59af5e07667306ec20d7be414717db400873"
+checksum = "cb7e3bdae2597556e59edeb8ecb62eb32c7e054c4f042d393732902979db69c3"
 dependencies = [
  "anyhow",
  "cranelift-codegen",
@@ -154,9 +154,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-native"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e10c2e7faa65d4ae7de9a83b44f2c31aca7dc638e17d0a79572fdf8103d720b"
+checksum = "301ef0edafeaeda5771a5d2db64ac53e1818ae3111220a185677025fe91db4a1"
 dependencies = [
  "cranelift-codegen",
  "libc",
@@ -165,9 +165,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-object"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "83ce94e18756058af8a66e3c0ba1123ae15517c72162d8060d0cb0974642adf2"
+checksum = "59e0ee3d013728903e0c513c31afa389b559bfd4fe8a44f80335c799e3132a41"
 dependencies = [
  "anyhow",
  "cranelift-codegen",
@@ -374,9 +374,9 @@ checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
 name = "wasmtime-jit-icache-coherence"
-version = "15.0.0"
+version = "16.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b73ad1395eda136baec5ece7e079e0536a82ef73488e345456cc9b89858ad0ec"
+checksum = "6b6d197fcc34ad32ed440e1f9552fd57d1f377d9699d31dee1b5b457322c1f8a"
 dependencies = [
  "cfg-if",
  "libc",
diff --git a/Cargo.toml b/Cargo.toml
index 20fcd222732..fdac789423c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,12 +8,12 @@ crate-type = ["dylib"]
 
 [dependencies]
 # These have to be in sync with each other
-cranelift-codegen = { version = "0.102", default-features = false, features = ["std", "unwind", "all-arch"] }
-cranelift-frontend = { version = "0.102" }
-cranelift-module = { version = "0.102" }
-cranelift-native = { version = "0.102" }
-cranelift-jit = { version = "0.102", optional = true }
-cranelift-object = { version = "0.102" }
+cranelift-codegen = { version = "0.103", default-features = false, features = ["std", "unwind", "all-arch"] }
+cranelift-frontend = { version = "0.103" }
+cranelift-module = { version = "0.103" }
+cranelift-native = { version = "0.103" }
+cranelift-jit = { version = "0.103", optional = true }
+cranelift-object = { version = "0.103" }
 target-lexicon = "0.12.0"
 gimli = { version = "0.28", default-features = false, features = ["write"]}
 object = { version = "0.32", default-features = false, features = ["std", "read_core", "write", "archive", "coff", "elf", "macho", "pe"] }
diff --git a/rust-toolchain b/rust-toolchain
index 4ba08f1af44..e1e1760c597 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2023-12-19"
+channel = "nightly-2023-12-24"
 components = ["rust-src", "rustc-dev", "llvm-tools"]
diff --git a/scripts/test_rustc_tests.sh b/scripts/test_rustc_tests.sh
index 7d7ffdadc7f..636f2875a68 100755
--- a/scripts/test_rustc_tests.sh
+++ b/scripts/test_rustc_tests.sh
@@ -31,6 +31,7 @@ rm tests/ui/parser/unclosed-delimiter-in-dep.rs # submodule contains //~ERROR
 # FIXME add needs-unwind to these tests
 rm -r tests/run-make/libtest-junit
 rm tests/ui/asm/may_unwind.rs
+rm tests/ui/stable-mir-print/basic_function.rs
 
 # extra warning about -Cpanic=abort for proc macros
 rm tests/ui/proc-macro/crt-static.rs
@@ -44,7 +45,6 @@ rm tests/ui/proc-macro/no-mangle-in-proc-macro-issue-111888.rs
 # vendor intrinsics
 rm tests/ui/sse2.rs # CodegenBackend::target_features not yet implemented
 rm tests/ui/simd/array-type.rs # "Index argument for `simd_insert` is not a constant"
-rm tests/ui/simd/masked-load-store.rs
 
 # exotic linkages
 rm tests/ui/issues/issue-33992.rs # unsupported linkages
@@ -80,6 +80,7 @@ rm -r tests/run-make/codegen-options-parsing
 rm -r tests/run-make/lto-*
 rm -r tests/run-make/reproducible-build-2
 rm -r tests/run-make/issue-109934-lto-debuginfo
+rm -r tests/run-make/no-builtins-lto
 
 # optimization tests
 # ==================
diff --git a/src/intrinsics/simd.rs b/src/intrinsics/simd.rs
index fe4f073f799..9242021ce2e 100644
--- a/src/intrinsics/simd.rs
+++ b/src/intrinsics/simd.rs
@@ -962,6 +962,37 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
             }
         }
 
+        sym::simd_masked_store => {
+            intrinsic_args!(fx, args => (mask, ptr, val); intrinsic);
+
+            let (val_lane_count, val_lane_ty) = val.layout().ty.simd_size_and_type(fx.tcx);
+            let (mask_lane_count, _mask_lane_ty) = mask.layout().ty.simd_size_and_type(fx.tcx);
+            assert_eq!(val_lane_count, mask_lane_count);
+            let lane_clif_ty = fx.clif_type(val_lane_ty).unwrap();
+            let ptr_val = ptr.load_scalar(fx);
+
+            for lane_idx in 0..val_lane_count {
+                let val_lane = val.value_lane(fx, lane_idx).load_scalar(fx);
+                let mask_lane = mask.value_lane(fx, lane_idx).load_scalar(fx);
+
+                let if_enabled = fx.bcx.create_block();
+                let next = fx.bcx.create_block();
+
+                fx.bcx.ins().brif(mask_lane, if_enabled, &[], next, &[]);
+                fx.bcx.seal_block(if_enabled);
+
+                fx.bcx.switch_to_block(if_enabled);
+                let offset = lane_idx as i32 * lane_clif_ty.bytes() as i32;
+                fx.bcx.ins().store(MemFlags::trusted(), val_lane, ptr_val, Offset32::new(offset));
+                fx.bcx.ins().jump(next, &[]);
+
+                fx.bcx.seal_block(next);
+                fx.bcx.switch_to_block(next);
+
+                fx.bcx.ins().nop();
+            }
+        }
+
         sym::simd_gather => {
             intrinsic_args!(fx, args => (val, ptr, mask); intrinsic);