Add compiler-rt fallbacks for sync builtins on armv5te-musl.

Alexhuszagh · Alexhuszagh · commit 33b747dacd55 · 2022-07-29T16:02:04.000-05:00
diff --git a/build.rs b/build.rs
@@ -356,7 +356,7 @@ mod c {
             }
         }
 
-        if llvm_target[0] == "armv7" {
+        if matches!(llvm_target[0].as_str(), "armv5te", "armv7") {
             sources.extend(&[
                 ("__sync_fetch_and_add_4", "arm/sync_fetch_and_add_4.S"),
                 ("__sync_fetch_and_add_8", "arm/sync_fetch_and_add_8.S"),

Original file line number	Diff line number	Diff line change
`@@ -356,7 +356,7 @@ mod c {`
`356`	`356`	`}`
`357`	`357`	`}`
`358`	`358`
`359`		`- if llvm_target[0] == "armv7" {`
	`359`	`+ if matches!(llvm_target[0].as_str(), "armv5te", "armv7") {`
`360`	`360`	`sources.extend(&[`
`361`	`361`	`("__sync_fetch_and_add_4", "arm/sync_fetch_and_add_4.S"),`
`362`	`362`	`("__sync_fetch_and_add_8", "arm/sync_fetch_and_add_8.S"),`