diff --git a/lib/std/special/compiler_rt/clzsi2_test.zig b/lib/std/special/compiler_rt/clzsi2_test.zig
index ff944558460c5f5f90ed052fa3779733b4fb87d1..8a2896fcb6cac6e8dd0bd56f67104bea914b82b6 100644
--- a/lib/std/special/compiler_rt/clzsi2_test.zig
+++ b/lib/std/special/compiler_rt/clzsi2_test.zig
@@ -4,7 +4,7 @@ const testing = @import("std").testing;
 fn test__clzsi2(a: u32, expected: i32) void {
     var nakedClzsi2 = clzsi2.__clzsi2;
     var actualClzsi2 = @ptrCast(fn (a: i32) callconv(.C) i32, nakedClzsi2);
-    var x = @intCast(i32, a);
+    var x = @bitCast(i32, a);
     var result = actualClzsi2(x);
     testing.expectEqual(expected, result);
 }
diff --git a/lib/std/special/compiler_rt/int.zig b/lib/std/special/compiler_rt/int.zig
index eb731ee89814dfc400c53a2d8e3b415c84d08525..a72c13e2331e6c2b1bc705a2405fbfe334acebe0 100644
--- a/lib/std/special/compiler_rt/int.zig
+++ b/lib/std/special/compiler_rt/int.zig
@@ -244,7 +244,7 @@ pub fn __udivsi3(n: u32, d: u32) callconv(.C) u32 {
         //      r.all -= d.all;
         //      carry = 1;
         // }
-        const s = @intCast(i32, d -% r -% 1) >> @intCast(u5, n_uword_bits - 1);
+        const s = @bitCast(i32, d -% r -% 1) >> @intCast(u5, n_uword_bits - 1);
         carry = @intCast(u32, s & 1);
         r -= d & @bitCast(u32, s);
     }
diff --git a/lib/std/special/compiler_rt/udivmod.zig b/lib/std/special/compiler_rt/udivmod.zig
index 7d519c34cb6cfd56a1d723758d9b91d5a01a6715..ba53d1dee01cf9b00358cdb568b9e43ef0c02e87 100644
--- a/lib/std/special/compiler_rt/udivmod.zig
+++ b/lib/std/special/compiler_rt/udivmod.zig
@@ -184,7 +184,7 @@ pub fn udivmod(comptime DoubleInt: type, a: DoubleInt, b: DoubleInt, maybe_rem:
         //      carry = 1;
         // }
         r_all = @ptrCast(*align(@alignOf(SingleInt)) DoubleInt, &r[0]).*; // TODO issue #421
-        const s: SignedDoubleInt = @intCast(SignedDoubleInt, b -% r_all -% 1) >> (DoubleInt.bit_count - 1);
+        const s: SignedDoubleInt = @bitCast(SignedDoubleInt, b -% r_all -% 1) >> (DoubleInt.bit_count - 1);
         carry = @intCast(u32, s & 1);
         r_all -= b & @bitCast(DoubleInt, s);
         r = @ptrCast(*[2]SingleInt, &r_all).*; // TODO issue #421