Patch builtins with a version enabling f16 on s390x

Author: tgross35

library/Cargo.lock

@@ -61,9 +61,8 @@ dependencies = [
 
 [[package]]
 name = "compiler_builtins"
-version = "0.1.148"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26137996631d90d2727b905b480fdcf8c4479fdbce7afd7f8e3796d689b33cc2"
+version = "0.1.999"
+source = "git+https://github.com/tgross35/compiler-builtins.git?branch=s390x-f16#8717dbc2ca1bde33a02a5ce046c0a11deec154fd"
 dependencies = [
  "cc",
  "rustc-std-workspace-core",

library/Cargo.toml

@@ -46,3 +46,4 @@ rustc-demangle.debug = 0
 rustc-std-workspace-core = { path = 'rustc-std-workspace-core' }
 rustc-std-workspace-alloc = { path = 'rustc-std-workspace-alloc' }
 rustc-std-workspace-std = { path = 'rustc-std-workspace-std' }
+compiler_builtins = { git = "https://github.com/tgross35/compiler-builtins.git", branch = "s390x-f16" }

library/alloc/Cargo.toml

@@ -12,7 +12,7 @@ edition = "2021"
 
 [dependencies]
 core = { path = "../core", public = true }
-compiler_builtins = { version = "=0.1.148", features = ['rustc-dep-of-std'] }
+compiler_builtins = { version = "0.1.148", features = ['rustc-dep-of-std'] }
 
 [dev-dependencies]
 rand = { version = "0.9.0", default-features = false, features = ["alloc"] }

library/std/Cargo.toml

@@ -18,7 +18,7 @@ cfg-if = { version = "1.0", features = ['rustc-dep-of-std'] }
 panic_unwind = { path = "../panic_unwind", optional = true }
 panic_abort = { path = "../panic_abort" }
 core = { path = "../core", public = true }
-compiler_builtins = { version = "=0.1.148" }
+compiler_builtins = { version = "0.1.148" }
 unwind = { path = "../unwind" }
 hashbrown = { version = "0.15", default-features = false, features = [
     'rustc-dep-of-std',