Merge commit '8de4afd39ba48f25be98684cdb7a96ec6da89d10' into sync_cg_clif-2025-12-18

Author: bjorn3

compiler/rustc_codegen_cranelift/.github/workflows/main.yml

@@ -28,7 +28,7 @@ jobs:
 
     - name: Avoid installing rustc-dev
       run: |
-        sed -i 's/components.*/components = ["rustfmt"]/' rust-toolchain
+        sed -i 's/components.*/components = ["rustfmt"]/' rust-toolchain.toml
         rustfmt -v
 
     - name: Rustfmt
@@ -88,7 +88,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: build/cg_clif
-        key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
+        key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-cargo-build-target-${{ hashFiles('rust-toolchain.toml', '**/Cargo.lock') }}
 
     - name: Set MinGW as the default toolchain
       if: matrix.os == 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
@@ -158,7 +158,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: build/cg_clif
-        key: ${{ runner.os }}-x86_64-unknown-linux-gnu-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
+        key: ${{ runner.os }}-x86_64-unknown-linux-gnu-cargo-build-target-${{ hashFiles('rust-toolchain.toml', '**/Cargo.lock') }}
 
     - name: Install hyperfine
       run: |
@@ -207,7 +207,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: build/cg_clif
-        key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-dist-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
+        key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-dist-cargo-build-target-${{ hashFiles('rust-toolchain.toml', '**/Cargo.lock') }}
 
     - name: Set MinGW as the default toolchain
       if: matrix.os == 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'

compiler/rustc_codegen_cranelift/.github/workflows/rustc.yml

@@ -20,7 +20,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: build/cg_clif
-        key: ${{ runner.os }}-rustc-test-cargo-build-target-${{ hashFiles('rust-toolchain', 'Cargo.lock') }}
+        key: ${{ runner.os }}-rustc-test-cargo-build-target-${{ hashFiles('rust-toolchain.toml', 'Cargo.lock') }}
 
     - name: Test
       run: ./scripts/test_bootstrap.sh
@@ -40,7 +40,7 @@ jobs:
       uses: actions/cache@v4
       with:
         path: build/cg_clif
-        key: ${{ runner.os }}-rustc-test-cargo-build-target-${{ hashFiles('rust-toolchain', 'Cargo.lock') }}
+        key: ${{ runner.os }}-rustc-test-cargo-build-target-${{ hashFiles('rust-toolchain.toml', 'Cargo.lock') }}
 
     - name: Install ripgrep
       run: |

compiler/rustc_codegen_cranelift/example/std_example.rs

@@ -259,6 +259,9 @@ unsafe fn test_simd() {
         test_mm_cvttps_epi32();
         test_mm_cvtsi128_si64();
 
+        #[cfg(not(jit))]
+        test_mm_cvtps_ph();
+
         test_mm_extract_epi8();
         test_mm_insert_epi16();
         test_mm_shuffle_epi8();
@@ -558,6 +561,21 @@ unsafe fn test_mm_cvttps_epi32() {
     }
 }
 
+#[cfg(target_arch = "x86_64")]
+#[target_feature(enable = "f16c")]
+#[cfg(not(jit))]
+unsafe fn test_mm_cvtps_ph() {
+    const F16_ONE: i16 = 0x3c00;
+    const F16_TWO: i16 = 0x4000;
+    const F16_THREE: i16 = 0x4200;
+    const F16_FOUR: i16 = 0x4400;
+
+    let a = _mm_set_ps(1.0, 2.0, 3.0, 4.0);
+    let r = _mm_cvtps_ph::<_MM_FROUND_CUR_DIRECTION>(a);
+    let e = _mm_set_epi16(0, 0, 0, 0, F16_ONE, F16_TWO, F16_THREE, F16_FOUR);
+    assert_eq_m128i(r, e);
+}
+
 fn test_checked_mul() {
     let u: Option<u8> = u8::from_str_radix("1000", 10).ok();
     assert_eq!(u, None);

compiler/rustc_codegen_cranelift/rust-toolchain

@@ -0,0 +1,4 @@
+[toolchain]
+channel = "nightly-2025-12-18"
+components = ["rust-src", "rustc-dev", "llvm-tools", "rustfmt"]
+profile = "minimal"

compiler/rustc_codegen_cranelift/rust-toolchain.toml

@@ -22,8 +22,7 @@ case $1 in
     "prepare")
         echo "=> Installing new nightly"
         rustup toolchain install --profile minimal "nightly-${TOOLCHAIN}" # Sanity check to see if the nightly exists
-        sed -i "s/\"nightly-.*\"/\"nightly-${TOOLCHAIN}\"/" rust-toolchain
-        rustup component add rustfmt || true
+        sed -i "s/\"nightly-.*\"/\"nightly-${TOOLCHAIN}\"/" rust-toolchain.toml
 
         echo "=> Uninstalling all old nightlies"
         for nightly in $(rustup toolchain list | grep nightly | grep -v "$TOOLCHAIN" | grep -v nightly-x86_64); do
@@ -35,7 +34,7 @@ case $1 in
         ./y.sh prepare
         ;;
     "commit")
-        git add rust-toolchain
+        git add rust-toolchain.toml
         git commit -m "Rustup to $(rustc -V)"
         ;;
     "push")

compiler/rustc_codegen_cranelift/scripts/rustup.sh

@@ -35,6 +35,7 @@ git checkout -- tests/ui/entry-point/auxiliary/bad_main_functions.rs
 rm tests/ui/asm/x86_64/evex512-implicit-feature.rs # unimplemented AVX512 x86 vendor intrinsic
 rm tests/ui/simd/dont-invalid-bitcast-x86_64.rs # unimplemented llvm.x86.sse41.round.ps
 rm tests/ui/simd/intrinsic/generic-arithmetic-pass.rs # unimplemented simd_funnel_{shl,shr}
+rm -r tests/ui/scalable-vectors # scalable vectors are unsupported
 
 # exotic linkages
 rm tests/incremental/hashes/function_interfaces.rs
@@ -53,23 +54,29 @@ rm tests/ui/sanitizer/kcfi-c-variadic.rs # same
 rm tests/ui/c-variadic/same-program-multiple-abis-x86_64.rs # variadics for calling conventions other than C unsupported
 rm tests/ui/delegation/fn-header.rs
 
+# inline assembly features
+rm tests/ui/asm/x86_64/issue-96797.rs # const and sym inline asm operands don't work entirely correctly
+rm tests/ui/asm/global-asm-mono-sym-fn.rs # same
+rm tests/ui/asm/naked-asm-mono-sym-fn.rs # same
+rm tests/ui/asm/x86_64/goto.rs # inline asm labels not supported
+rm tests/ui/asm/label-operand.rs # same
+rm tests/ui/asm/may_unwind.rs # asm unwinding not supported
+rm tests/ui/asm/aarch64/may_unwind.rs # same
+
 # misc unimplemented things
 rm tests/ui/target-feature/missing-plusminus.rs # error not implemented
 rm -r tests/run-make/repr128-dwarf # debuginfo test
 rm -r tests/run-make/split-debuginfo # same
 rm -r tests/run-make/target-specs # i686 not supported by Cranelift
 rm -r tests/run-make/mismatching-target-triples # same
-rm tests/ui/asm/x86_64/issue-96797.rs # const and sym inline asm operands don't work entirely correctly
-rm tests/ui/asm/global-asm-mono-sym-fn.rs # same
-rm tests/ui/asm/naked-asm-mono-sym-fn.rs # same
-rm tests/ui/asm/x86_64/goto.rs # inline asm labels not supported
-rm tests/ui/asm/label-operand.rs # same
 rm tests/ui/simd/simd-bitmask-notpow2.rs # non-pow-of-2 simd vector sizes
 rm -r tests/run-make/used-proc-macro # used(linker) isn't supported yet
 rm tests/ui/linking/no-gc-encapsulation-symbols.rs # same
 rm tests/ui/attributes/fn-align-dyn.rs # per-function alignment not supported
 rm -r tests/ui/explicit-tail-calls # tail calls
 rm -r tests/run-make/pointer-auth-link-with-c # pointer auth
+rm -r tests/ui/eii # EII not yet implemented
+rm -r tests/run-make/forced-unwind-terminate-pof # forced unwinding doesn't take precedence
 
 # requires LTO
 rm -r tests/run-make/cdylib
@@ -78,6 +85,7 @@ rm -r tests/run-make/lto-*
 rm -r tests/run-make/reproducible-build-2
 rm -r tests/run-make/no-builtins-lto
 rm -r tests/run-make/reachable-extern-fn-available-lto
+rm -r tests/run-make/no-builtins-linker-plugin-lto
 
 # coverage instrumentation
 rm tests/ui/consts/precise-drop-with-coverage.rs
@@ -87,6 +95,7 @@ rm -r tests/ui/instrument-coverage/
 # ==================
 rm tests/ui/codegen/issue-28950.rs # depends on stack size optimizations
 rm tests/ui/codegen/init-large-type.rs # same
+rm tests/ui/codegen/StackColoring-not-blowup-stack-issue-40883.rs # same
 rm tests/ui/statics/const_generics.rs # tests an optimization
 rm tests/ui/linking/executable-no-mangle-strip.rs # requires --gc-sections to work for statics
 
@@ -143,6 +152,15 @@ rm tests/ui/errors/remap-path-prefix-sysroot.rs # different sysroot source path
 rm -r tests/run-make/export/extern-opt # something about rustc version mismatches
 rm -r tests/run-make/export # same
 rm -r tests/ui/compiletest-self-test/compile-flags-incremental.rs # needs compiletest compiled with panic=unwind
+rm tests/ui/async-await/in-trait/dont-project-to-specializable-projection.rs # something going wrong with stdlib source remapping
+rm tests/ui/consts/miri_unleashed/drop.rs # same
+rm tests/ui/error-emitter/multiline-removal-suggestion.rs # same
+rm tests/ui/lint/lint-const-item-mutation.rs # same
+rm tests/ui/lint/use-redundant/use-redundant-issue-71450.rs # same
+rm tests/ui/lint/use-redundant/use-redundant-prelude-rust-2021.rs # same
+rm tests/ui/specialization/const_trait_impl.rs # same
+rm tests/ui/thir-print/offset_of.rs # same
+rm tests/ui/traits/const-traits/const_closure-const_trait_impl-ice-113381.rs # same
 
 # genuine bugs
 # ============
@@ -157,6 +175,7 @@ rm tests/ui/lint/non-snake-case/lint-non-snake-case-crate.rs # same
 rm tests/ui/async-await/async-drop/async-drop-initial.rs # same (rust-lang/rust#140493)
 rm -r tests/ui/codegen/equal-pointers-unequal # make incorrect assumptions about the location of stack variables
 rm -r tests/run-make-cargo/rustdoc-scrape-examples-paths # FIXME(rust-lang/rust#145580) incr comp bug
+rm -r tests/incremental/extern_static/issue-49153.rs # assumes reference to undefined static gets optimized away
 
 rm tests/ui/intrinsics/panic-uninitialized-zeroed.rs # really slow with unoptimized libstd
 rm tests/ui/process/process-panic-after-fork.rs # same

compiler/rustc_codegen_cranelift/scripts/test_rustc_tests.sh

@@ -190,7 +190,7 @@ fn dep_symbol_lookup_fn(
                 diag.emit();
             }
             Linkage::Dynamic => {
-                dylib_paths.push(src.dylib.as_ref().unwrap().0.clone());
+                dylib_paths.push(src.dylib.as_ref().unwrap().clone());
             }
         }
     }

compiler/rustc_codegen_cranelift/src/driver/jit.rs

@@ -1313,6 +1313,35 @@ pub(super) fn codegen_x86_llvm_intrinsic_call<'tcx>(
             ret.write_cvalue_transmute(fx, res);
         }
 
+        "llvm.x86.vcvtps2ph.128" => {
+            // https://www.intel.com/content/www/us/en/docs/intrinsics-guide/index.html#text=_mm_cvtps_ph
+            intrinsic_args!(fx, args => (a, _imm8); intrinsic);
+            let a = a.load_scalar(fx);
+
+            let imm8 =
+                if let Some(imm8) = crate::constant::mir_operand_get_const_val(fx, &args[1].node) {
+                    imm8
+                } else {
+                    fx.tcx
+                        .dcx()
+                        .span_fatal(span, "Index argument for `_mm_cvtps_ph` is not a constant");
+                };
+
+            let imm8 = imm8.to_u32();
+
+            codegen_inline_asm_inner(
+                fx,
+                &[InlineAsmTemplatePiece::String(format!("vcvtps2ph xmm0, xmm0, {imm8}").into())],
+                &[CInlineAsmOperand::InOut {
+                    reg: InlineAsmRegOrRegClass::Reg(InlineAsmReg::X86(X86InlineAsmReg::xmm0)),
+                    _late: true,
+                    in_value: a,
+                    out_place: Some(ret),
+                }],
+                InlineAsmOptions::NOSTACK | InlineAsmOptions::PURE | InlineAsmOptions::NOMEM,
+            );
+        }
+
         _ => {
             fx.tcx
                 .dcx()

compiler/rustc_codegen_cranelift/src/intrinsics/llvm_x86.rs

@@ -2,6 +2,3 @@
 
 # Prevents un-canonicalized issue links (to avoid wrong issues being linked in r-l/rust)
 [issue-links]
-
-# Prevents mentions in commits to avoid users being spammed
-[no-mentions]