Improve guard

Licenser · Licenser · commit 124a2104b4e4 · 2019-08-10T18:29:12.000+02:00
diff --git a/crates/core_arch/src/arm/neon.rs b/crates/core_arch/src/arm/neon.rs
@@ -1477,7 +1477,7 @@ macro_rules! arm_vget_lane {
         #[cfg_attr(target_arch = "arm", target_feature(enable = "v7"))]
         #[cfg_attr(test, assert_instr(umov))]
         pub unsafe fn $name(v: $from, lane: i32) -> $to {
-            if lane > $lanes {
+            if lane < 0 || lane > $lanes {
                 unreachable_unchecked()
             }
             simd_extract(v, lane as u32)

Original file line number	Diff line number	Diff line change
`@@ -1477,7 +1477,7 @@ macro_rules! arm_vget_lane {`
`1477`	`1477`	`#[cfg_attr(target_arch = "arm", target_feature(enable = "v7"))]`
`1478`	`1478`	`#[cfg_attr(test, assert_instr(umov))]`
`1479`	`1479`	`pub unsafe fn $name(v: $from, lane: i32) -> $to {`
`1480`		`- if lane > $lanes {`
	`1480`	`+ if lane < 0 \|\| lane > $lanes {`
`1481`	`1481`	`unreachable_unchecked()`
`1482`	`1482`	`}`
`1483`	`1483`	`simd_extract(v, lane as u32)`