fix: canonicalize simd nan values

explodingcamera · explodingcamera · commit 9b3e8fee9731 · 2025-03-11T20:11:35.000+01:00
Signed-off-by: Henry Gressmann &lt;mail@henrygressmann.de&gt;
diff --git a/crates/tinywasm/src/interpreter/executor.rs b/crates/tinywasm/src/interpreter/executor.rs
@@ -584,10 +584,34 @@ impl<'store, 'stack> Executor<'store, 'stack> {
             F64x2Mul => self.stack.values.calculate_same::<f64x2>(|a, b| Ok(canonicalize_f64x2(a * b))).to_cf()?,
             F32x4Div => self.stack.values.calculate_same::<f32x4>(|a, b| Ok(canonicalize_f32x4(a / b))).to_cf()?,
             F64x2Div => self.stack.values.calculate_same::<f64x2>(|a, b| Ok(canonicalize_f64x2(a / b))).to_cf()?,
-            F32x4Min => self.stack.values.calculate_same::<f32x4>(|a, b| Ok(a.simd_min(b))).to_cf()?,
-            F64x2Min => self.stack.values.calculate_same::<f64x2>(|a, b| Ok(a.simd_min(b))).to_cf()?,
-            F32x4Max => self.stack.values.calculate_same::<f32x4>(|a, b| Ok(a.simd_max(b))).to_cf()?,
-            F64x2Max => self.stack.values.calculate_same::<f64x2>(|a, b| Ok(a.simd_max(b))).to_cf()?,
+            F32x4Min => self.stack.values.calculate_same::<f32x4>(|a, b| {
+                Ok(Simd::<f32, 4>::from_array([
+                    b[0].tw_minimum(a[0]),
+                    b[1].tw_minimum(a[1]),
+                    b[2].tw_minimum(a[2]),
+                    b[3].tw_minimum(a[3]),
+                ]))
+            }).to_cf()?,
+            F64x2Min => self.stack.values.calculate_same::<f64x2>(|a, b| {
+                Ok(Simd::<f64, 2>::from_array([
+                    b[0].tw_minimum(a[0]),
+                    b[1].tw_minimum(a[1]),
+                ]))
+            }).to_cf()?,
+            F32x4Max => self.stack.values.calculate_same::<f32x4>(|a, b| {
+                Ok(Simd::<f32, 4>::from_array([
+                    b[0].tw_maximum(a[0]),
+                    b[1].tw_maximum(a[1]),
+                    b[2].tw_maximum(a[2]),
+                    b[3].tw_maximum(a[3]),
+                ]))
+            }).to_cf()?,
+            F64x2Max => self.stack.values.calculate_same::<f64x2>(|a, b| {
+                Ok(Simd::<f64, 2>::from_array([
+                    b[0].tw_maximum(a[0]),
+                    b[1].tw_maximum(a[1]),
+                ]))
+            }).to_cf()?,
 
             F32x4PMin => self.stack.values.calculate_same::<f32x4>(|a, b| {
                 Ok(Simd::<f32, 4>::from_array([
diff --git a/crates/tinywasm/src/interpreter/num_helpers.rs b/crates/tinywasm/src/interpreter/num_helpers.rs
@@ -74,7 +74,8 @@ macro_rules! impl_wasm_float_ops {
             // https://webassembly.github.io/spec/core/exec/numerics.html#op-fnearest
             fn tw_nearest(self) -> Self {
                 match self {
-                    x if x.is_nan() => x, // preserve NaN
+                    // x if x.is_nan() => x, // preserve NaN
+                    x if x.is_nan() => Self::NAN, // Do not preserve NaN
                     x if x.is_infinite() || x == 0.0 => x, // preserve infinities and zeros
                     x if (0.0..=0.5).contains(&x) => 0.0,
                     x if (-0.5..0.0).contains(&x) => -0.0,
@@ -99,7 +100,8 @@ macro_rules! impl_wasm_float_ops {
                     Some(core::cmp::Ordering::Less) => self,
                     Some(core::cmp::Ordering::Greater) => other,
                     Some(core::cmp::Ordering::Equal) => if self.is_sign_negative() && other.is_sign_positive() { self } else { other },
-                    None => self + other, // At least one input is NaN. Use `+` to perform NaN propagation and quieting.
+                    // None => self + other, // At least one input is NaN. Use `+` to perform NaN propagation and quieting.
+                    None => Self::NAN, // Do not preserve NaN
                 }
             }
 
@@ -111,7 +113,8 @@ macro_rules! impl_wasm_float_ops {
                     Some(core::cmp::Ordering::Greater) => self,
                     Some(core::cmp::Ordering::Less) => other,
                     Some(core::cmp::Ordering::Equal) => if self.is_sign_negative() && other.is_sign_positive() { other } else { self },
-                    None => self + other, // At least one input is NaN. Use `+` to perform NaN propagation and quieting.
+                    // None => self + other, // At least one input is NaN. Use `+` to perform NaN propagation and quieting.
+                    None => Self::NAN, // Do not preserve NaN
                 }
             }
         }
diff --git a/crates/tinywasm/tests/generated/wasm-simd.csv b/crates/tinywasm/tests/generated/wasm-simd.csv
@@ -1,2 +1,2 @@
 0.8.0,1300,24679,[{"name":"simd_address.wast","passed":4,"failed":45},{"name":"simd_align.wast","passed":46,"failed":54},{"name":"simd_bit_shift.wast","passed":39,"failed":213},{"name":"simd_bitwise.wast","passed":28,"failed":141},{"name":"simd_boolean.wast","passed":16,"failed":261},{"name":"simd_const.wast","passed":301,"failed":456},{"name":"simd_conversions.wast","passed":48,"failed":234},{"name":"simd_f32x4.wast","passed":16,"failed":774},{"name":"simd_f32x4_arith.wast","passed":16,"failed":1806},{"name":"simd_f32x4_cmp.wast","passed":24,"failed":2583},{"name":"simd_f32x4_pmin_pmax.wast","passed":14,"failed":3873},{"name":"simd_f32x4_rounding.wast","passed":24,"failed":177},{"name":"simd_f64x2.wast","passed":8,"failed":795},{"name":"simd_f64x2_arith.wast","passed":16,"failed":1809},{"name":"simd_f64x2_cmp.wast","passed":24,"failed":2661},{"name":"simd_f64x2_pmin_pmax.wast","passed":14,"failed":3873},{"name":"simd_f64x2_rounding.wast","passed":24,"failed":177},{"name":"simd_i16x8_arith.wast","passed":11,"failed":183},{"name":"simd_i16x8_arith2.wast","passed":19,"failed":153},{"name":"simd_i16x8_cmp.wast","passed":30,"failed":435},{"name":"simd_i16x8_extadd_pairwise_i8x16.wast","passed":4,"failed":17},{"name":"simd_i16x8_extmul_i8x16.wast","passed":12,"failed":105},{"name":"simd_i16x8_q15mulr_sat_s.wast","passed":3,"failed":27},{"name":"simd_i16x8_sat_arith.wast","passed":16,"failed":206},{"name":"simd_i32x4_arith.wast","passed":11,"failed":183},{"name":"simd_i32x4_arith2.wast","passed":26,"failed":123},{"name":"simd_i32x4_cmp.wast","passed":40,"failed":435},{"name":"simd_i32x4_dot_i16x8.wast","passed":3,"failed":27},{"name":"simd_i32x4_extadd_pairwise_i16x8.wast","passed":4,"failed":17},{"name":"simd_i32x4_extmul_i16x8.wast","passed":12,"failed":105},{"name":"simd_i32x4_trunc_sat_f32x4.wast","passed":4,"failed":103},{"name":"simd_i32x4_trunc_sat_f64x2.wast","passed":4,"failed":103},{"name":"simd_i64x2_arith.wast","passed":11,"failed":189},{"name":"simd_i64x2_arith2.wast","passed":2,"failed":23},{"name":"simd_i64x2_cmp.wast","passed":10,"failed":103},{"name":"simd_i64x2_extmul_i32x4.wast","passed":12,"failed":105},{"name":"simd_i8x16_arith.wast","passed":8,"failed":123},{"name":"simd_i8x16_arith2.wast","passed":25,"failed":186},{"name":"simd_i8x16_cmp.wast","passed":30,"failed":415},{"name":"simd_i8x16_sat_arith.wast","passed":24,"failed":190},{"name":"simd_int_to_int_extend.wast","passed":24,"failed":229},{"name":"simd_lane.wast","passed":189,"failed":286},{"name":"simd_linking.wast","passed":0,"failed":3},{"name":"simd_load.wast","passed":8,"failed":31},{"name":"simd_load16_lane.wast","passed":3,"failed":33},{"name":"simd_load32_lane.wast","passed":3,"failed":21},{"name":"simd_load64_lane.wast","passed":3,"failed":13},{"name":"simd_load8_lane.wast","passed":3,"failed":49},{"name":"simd_load_extend.wast","passed":18,"failed":86},{"name":"simd_load_splat.wast","passed":12,"failed":114},{"name":"simd_load_zero.wast","passed":10,"failed":29},{"name":"simd_splat.wast","passed":23,"failed":162},{"name":"simd_store.wast","passed":9,"failed":19},{"name":"simd_store16_lane.wast","passed":3,"failed":33},{"name":"simd_store32_lane.wast","passed":3,"failed":21},{"name":"simd_store64_lane.wast","passed":3,"failed":13},{"name":"simd_store8_lane.wast","passed":3,"failed":49}]
-0.9.0-alpha.0,24030,1950,[{"name":"simd_address.wast","passed":49,"failed":0},{"name":"simd_align.wast","passed":100,"failed":0},{"name":"simd_bit_shift.wast","passed":252,"failed":0},{"name":"simd_bitwise.wast","passed":169,"failed":0},{"name":"simd_boolean.wast","passed":277,"failed":0},{"name":"simd_const.wast","passed":757,"failed":0},{"name":"simd_conversions.wast","passed":56,"failed":226},{"name":"simd_f32x4.wast","passed":629,"failed":161},{"name":"simd_f32x4_arith.wast","passed":1822,"failed":0},{"name":"simd_f32x4_cmp.wast","passed":2607,"failed":0},{"name":"simd_f32x4_pmin_pmax.wast","passed":3887,"failed":0},{"name":"simd_f32x4_rounding.wast","passed":148,"failed":53},{"name":"simd_f64x2.wast","passed":639,"failed":164},{"name":"simd_f64x2_arith.wast","passed":1824,"failed":1},{"name":"simd_f64x2_cmp.wast","passed":2685,"failed":0},{"name":"simd_f64x2_pmin_pmax.wast","passed":3887,"failed":0},{"name":"simd_f64x2_rounding.wast","passed":148,"failed":53},{"name":"simd_i16x8_arith.wast","passed":194,"failed":0},{"name":"simd_i16x8_arith2.wast","passed":142,"failed":30},{"name":"simd_i16x8_cmp.wast","passed":436,"failed":29},{"name":"simd_i16x8_extadd_pairwise_i8x16.wast","passed":5,"failed":16},{"name":"simd_i16x8_extmul_i8x16.wast","passed":13,"failed":104},{"name":"simd_i16x8_q15mulr_sat_s.wast","passed":30,"failed":0},{"name":"simd_i16x8_sat_arith.wast","passed":222,"failed":0},{"name":"simd_i32x4_arith.wast","passed":194,"failed":0},{"name":"simd_i32x4_arith2.wast","passed":149,"failed":0},{"name":"simd_i32x4_cmp.wast","passed":450,"failed":25},{"name":"simd_i32x4_dot_i16x8.wast","passed":14,"failed":16},{"name":"simd_i32x4_extadd_pairwise_i16x8.wast","passed":5,"failed":16},{"name":"simd_i32x4_extmul_i16x8.wast","passed":13,"failed":104},{"name":"simd_i32x4_trunc_sat_f32x4.wast","passed":17,"failed":90},{"name":"simd_i32x4_trunc_sat_f64x2.wast","passed":5,"failed":102},{"name":"simd_i64x2_arith.wast","passed":200,"failed":0},{"name":"simd_i64x2_arith2.wast","passed":25,"failed":0},{"name":"simd_i64x2_cmp.wast","passed":97,"failed":16},{"name":"simd_i64x2_extmul_i32x4.wast","passed":13,"failed":104},{"name":"simd_i8x16_arith.wast","passed":131,"failed":0},{"name":"simd_i8x16_arith2.wast","passed":179,"failed":32},{"name":"simd_i8x16_cmp.wast","passed":409,"failed":36},{"name":"simd_i8x16_sat_arith.wast","passed":214,"failed":0},{"name":"simd_int_to_int_extend.wast","passed":25,"failed":228},{"name":"simd_lane.wast","passed":331,"failed":144},{"name":"simd_linking.wast","passed":3,"failed":0},{"name":"simd_load.wast","passed":37,"failed":2},{"name":"simd_load16_lane.wast","passed":36,"failed":0},{"name":"simd_load32_lane.wast","passed":24,"failed":0},{"name":"simd_load64_lane.wast","passed":16,"failed":0},{"name":"simd_load8_lane.wast","passed":52,"failed":0},{"name":"simd_load_extend.wast","passed":20,"failed":84},{"name":"simd_load_splat.wast","passed":14,"failed":112},{"name":"simd_load_zero.wast","passed":39,"failed":0},{"name":"simd_memory-multi.wast","passed":1,"failed":0},{"name":"simd_splat.wast","passed":183,"failed":2},{"name":"simd_store.wast","passed":28,"failed":0},{"name":"simd_store16_lane.wast","passed":36,"failed":0},{"name":"simd_store32_lane.wast","passed":24,"failed":0},{"name":"simd_store64_lane.wast","passed":16,"failed":0},{"name":"simd_store8_lane.wast","passed":52,"failed":0}]
+0.9.0-alpha.0,24355,1625,[{"name":"simd_address.wast","passed":49,"failed":0},{"name":"simd_align.wast","passed":100,"failed":0},{"name":"simd_bit_shift.wast","passed":252,"failed":0},{"name":"simd_bitwise.wast","passed":169,"failed":0},{"name":"simd_boolean.wast","passed":277,"failed":0},{"name":"simd_const.wast","passed":757,"failed":0},{"name":"simd_conversions.wast","passed":56,"failed":226},{"name":"simd_f32x4.wast","passed":790,"failed":0},{"name":"simd_f32x4_arith.wast","passed":1822,"failed":0},{"name":"simd_f32x4_cmp.wast","passed":2607,"failed":0},{"name":"simd_f32x4_pmin_pmax.wast","passed":3887,"failed":0},{"name":"simd_f32x4_rounding.wast","passed":148,"failed":53},{"name":"simd_f64x2.wast","passed":803,"failed":0},{"name":"simd_f64x2_arith.wast","passed":1824,"failed":1},{"name":"simd_f64x2_cmp.wast","passed":2685,"failed":0},{"name":"simd_f64x2_pmin_pmax.wast","passed":3887,"failed":0},{"name":"simd_f64x2_rounding.wast","passed":148,"failed":53},{"name":"simd_i16x8_arith.wast","passed":194,"failed":0},{"name":"simd_i16x8_arith2.wast","passed":142,"failed":30},{"name":"simd_i16x8_cmp.wast","passed":436,"failed":29},{"name":"simd_i16x8_extadd_pairwise_i8x16.wast","passed":5,"failed":16},{"name":"simd_i16x8_extmul_i8x16.wast","passed":13,"failed":104},{"name":"simd_i16x8_q15mulr_sat_s.wast","passed":30,"failed":0},{"name":"simd_i16x8_sat_arith.wast","passed":222,"failed":0},{"name":"simd_i32x4_arith.wast","passed":194,"failed":0},{"name":"simd_i32x4_arith2.wast","passed":149,"failed":0},{"name":"simd_i32x4_cmp.wast","passed":450,"failed":25},{"name":"simd_i32x4_dot_i16x8.wast","passed":14,"failed":16},{"name":"simd_i32x4_extadd_pairwise_i16x8.wast","passed":5,"failed":16},{"name":"simd_i32x4_extmul_i16x8.wast","passed":13,"failed":104},{"name":"simd_i32x4_trunc_sat_f32x4.wast","passed":17,"failed":90},{"name":"simd_i32x4_trunc_sat_f64x2.wast","passed":5,"failed":102},{"name":"simd_i64x2_arith.wast","passed":200,"failed":0},{"name":"simd_i64x2_arith2.wast","passed":25,"failed":0},{"name":"simd_i64x2_cmp.wast","passed":97,"failed":16},{"name":"simd_i64x2_extmul_i32x4.wast","passed":13,"failed":104},{"name":"simd_i8x16_arith.wast","passed":131,"failed":0},{"name":"simd_i8x16_arith2.wast","passed":179,"failed":32},{"name":"simd_i8x16_cmp.wast","passed":409,"failed":36},{"name":"simd_i8x16_sat_arith.wast","passed":214,"failed":0},{"name":"simd_int_to_int_extend.wast","passed":25,"failed":228},{"name":"simd_lane.wast","passed":331,"failed":144},{"name":"simd_linking.wast","passed":3,"failed":0},{"name":"simd_load.wast","passed":37,"failed":2},{"name":"simd_load16_lane.wast","passed":36,"failed":0},{"name":"simd_load32_lane.wast","passed":24,"failed":0},{"name":"simd_load64_lane.wast","passed":16,"failed":0},{"name":"simd_load8_lane.wast","passed":52,"failed":0},{"name":"simd_load_extend.wast","passed":20,"failed":84},{"name":"simd_load_splat.wast","passed":14,"failed":112},{"name":"simd_load_zero.wast","passed":39,"failed":0},{"name":"simd_memory-multi.wast","passed":1,"failed":0},{"name":"simd_splat.wast","passed":183,"failed":2},{"name":"simd_store.wast","passed":28,"failed":0},{"name":"simd_store16_lane.wast","passed":36,"failed":0},{"name":"simd_store32_lane.wast","passed":24,"failed":0},{"name":"simd_store64_lane.wast","passed":16,"failed":0},{"name":"simd_store8_lane.wast","passed":52,"failed":0}]

Original file line number	Diff line number	Diff line change
`@@ -74,7 +74,8 @@ macro_rules! impl_wasm_float_ops {`
`74`	`74`	`// https://webassembly.github.io/spec/core/exec/numerics.html#op-fnearest`
`75`	`75`	`fn tw_nearest(self) -> Self {`
`76`	`76`	`match self {`
`77`		`- x if x.is_nan() => x, // preserve NaN`
	`77`	`+ // x if x.is_nan() => x, // preserve NaN`
	`78`	`+ x if x.is_nan() => Self::NAN, // Do not preserve NaN`
`78`	`79`	`x if x.is_infinite() \|\| x == 0.0 => x, // preserve infinities and zeros`
`79`	`80`	`x if (0.0..=0.5).contains(&x) => 0.0,`
`80`	`81`	`x if (-0.5..0.0).contains(&x) => -0.0,`
`@@ -99,7 +100,8 @@ macro_rules! impl_wasm_float_ops {`
`99`	`100`	`Some(core::cmp::Ordering::Less) => self,`
`100`	`101`	`Some(core::cmp::Ordering::Greater) => other,`
`101`	`102`	`Some(core::cmp::Ordering::Equal) => if self.is_sign_negative() && other.is_sign_positive() { self } else { other },`
`102`		- None => self + other, // At least one input is NaN. Use `+` to perform NaN propagation and quieting.
	`103`	+ // None => self + other, // At least one input is NaN. Use `+` to perform NaN propagation and quieting.
	`104`	`+ None => Self::NAN, // Do not preserve NaN`
`103`	`105`	`}`
`104`	`106`	`}`
`105`	`107`
`@@ -111,7 +113,8 @@ macro_rules! impl_wasm_float_ops {`
`111`	`113`	`Some(core::cmp::Ordering::Greater) => self,`
`112`	`114`	`Some(core::cmp::Ordering::Less) => other,`
`113`	`115`	`Some(core::cmp::Ordering::Equal) => if self.is_sign_negative() && other.is_sign_positive() { other } else { self },`
`114`		- None => self + other, // At least one input is NaN. Use `+` to perform NaN propagation and quieting.
	`116`	+ // None => self + other, // At least one input is NaN. Use `+` to perform NaN propagation and quieting.
	`117`	`+ None => Self::NAN, // Do not preserve NaN`
`115`	`118`	`}`
`116`	`119`	`}`
`117`	`120`	`}`
Original file line number	Diff line number	Diff line change
`@@ -1,2 +1,2 @@`
`1`	`1`	0.8.0,1300,24679,[{"name":"simd_address.wast","passed":4,"failed":45},{"name":"simd_align.wast","passed":46,"failed":54},{"name":"simd_bit_shift.wast","passed":39,"failed":213},{"name":"simd_bitwise.wast","passed":28,"failed":141},{"name":"simd_boolean.wast","passed":16,"failed":261},{"name":"simd_const.wast","passed":301,"failed":456},{"name":"simd_conversions.wast","passed":48,"failed":234},{"name":"simd_f32x4.wast","passed":16,"failed":774},{"name":"simd_f32x4_arith.wast","passed":16,"failed":1806},{"name":"simd_f32x4_cmp.wast","passed":24,"failed":2583},{"name":"simd_f32x4_pmin_pmax.wast","passed":14,"failed":3873},{"name":"simd_f32x4_rounding.wast","passed":24,"failed":177},{"name":"simd_f64x2.wast","passed":8,"failed":795},{"name":"simd_f64x2_arith.wast","passed":16,"failed":1809},{"name":"simd_f64x2_cmp.wast","passed":24,"failed":2661},{"name":"simd_f64x2_pmin_pmax.wast","passed":14,"failed":3873},{"name":"simd_f64x2_rounding.wast","passed":24,"failed":177},{"name":"simd_i16x8_arith.wast","passed":11,"failed":183},{"name":"simd_i16x8_arith2.wast","passed":19,"failed":153},{"name":"simd_i16x8_cmp.wast","passed":30,"failed":435},{"name":"simd_i16x8_extadd_pairwise_i8x16.wast","passed":4,"failed":17},{"name":"simd_i16x8_extmul_i8x16.wast","passed":12,"failed":105},{"name":"simd_i16x8_q15mulr_sat_s.wast","passed":3,"failed":27},{"name":"simd_i16x8_sat_arith.wast","passed":16,"failed":206},{"name":"simd_i32x4_arith.wast","passed":11,"failed":183},{"name":"simd_i32x4_arith2.wast","passed":26,"failed":123},{"name":"simd_i32x4_cmp.wast","passed":40,"failed":435},{"name":"simd_i32x4_dot_i16x8.wast","passed":3,"failed":27},{"name":"simd_i32x4_extadd_pairwise_i16x8.wast","passed":4,"failed":17},{"name":"simd_i32x4_extmul_i16x8.wast","passed":12,"failed":105},{"name":"simd_i32x4_trunc_sat_f32x4.wast","passed":4,"failed":103},{"name":"simd_i32x4_trunc_sat_f64x2.wast","passed":4,"failed":103},{"name":"simd_i64x2_arith.wast","passed":11,"failed":189},{"name":"simd_i64x2_arith2.wast","passed":2,"failed":23},{"name":"simd_i64x2_cmp.wast","passed":10,"failed":103},{"name":"simd_i64x2_extmul_i32x4.wast","passed":12,"failed":105},{"name":"simd_i8x16_arith.wast","passed":8,"failed":123},{"name":"simd_i8x16_arith2.wast","passed":25,"failed":186},{"name":"simd_i8x16_cmp.wast","passed":30,"failed":415},{"name":"simd_i8x16_sat_arith.wast","passed":24,"failed":190},{"name":"simd_int_to_int_extend.wast","passed":24,"failed":229},{"name":"simd_lane.wast","passed":189,"failed":286},{"name":"simd_linking.wast","passed":0,"failed":3},{"name":"simd_load.wast","passed":8,"failed":31},{"name":"simd_load16_lane.wast","passed":3,"failed":33},{"name":"simd_load32_lane.wast","passed":3,"failed":21},{"name":"simd_load64_lane.wast","passed":3,"failed":13},{"name":"simd_load8_lane.wast","passed":3,"failed":49},{"name":"simd_load_extend.wast","passed":18,"failed":86},{"name":"simd_load_splat.wast","passed":12,"failed":114},{"name":"simd_load_zero.wast","passed":10,"failed":29},{"name":"simd_splat.wast","passed":23,"failed":162},{"name":"simd_store.wast","passed":9,"failed":19},{"name":"simd_store16_lane.wast","passed":3,"failed":33},{"name":"simd_store32_lane.wast","passed":3,"failed":21},{"name":"simd_store64_lane.wast","passed":3,"failed":13},{"name":"simd_store8_lane.wast","passed":3,"failed":49}]
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