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rust-lang · May 8, 2024 · a3ab795 · a3ab795
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commit a3ab795
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Showing 3 changed files with 4 additions and 2 deletions.
diff --git a/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs b/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
@@ -328,8 +328,8 @@ fn codegen_float_intrinsic_call<'tcx>(
         sym::fabsf64 => ("fabs", 1, fx.tcx.types.f64, types::F64),
         sym::fmaf32 => ("fmaf", 3, fx.tcx.types.f32, types::F32),
         sym::fmaf64 => ("fma", 3, fx.tcx.types.f64, types::F64),
-        sym::fmuladdf32 => ("fmaf", 3, fx.tcx.types.f32, types::F32), // NOTE: pessimal without FMA target feature
-        sym::fmuladdf64 => ("fma", 3, fx.tcx.types.f64, types::F64), // NOTE: pessimal without FMA target feature
+        sym::fmuladdf32 => ("fmaf", 3, fx.tcx.types.f32, types::F32), // NOTE: software emulation without FMA target feature
+        sym::fmuladdf64 => ("fma", 3, fx.tcx.types.f64, types::F64), // NOTE: software emulation without FMA target feature
         sym::copysignf32 => ("copysignf", 2, fx.tcx.types.f32, types::F32),
         sym::copysignf64 => ("copysign", 2, fx.tcx.types.f64, types::F64),
         sym::floorf32 => ("floorf", 1, fx.tcx.types.f32, types::F32),

diff --git a/library/std/src/f32/tests.rs b/library/std/src/f32/tests.rs
@@ -409,6 +409,7 @@ fn test_mul_add() {
     assert_eq!((-3.2f32).mul_add(2.4, neg_inf), neg_inf);
 }
 
+#[cfg(not(bootstrap))]
 #[test]
 fn test_mul_add_fast() {
     let nan: f32 = f32::NAN;

diff --git a/library/std/src/f64/tests.rs b/library/std/src/f64/tests.rs
@@ -397,6 +397,7 @@ fn test_mul_add() {
     assert_eq!((-3.2f64).mul_add(2.4, neg_inf), neg_inf);
 }
 
+#[cfg(not(bootstrap))]
 #[test]
 fn test_mul_add_fast() {
     let nan: f64 = f64::NAN;