moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

cranelift/codegen/src/isa/arm32/registers.rs

@@ -0,0 +1,68 @@
+//! ARM32 register descriptions.
+
+use crate::isa::registers::{RegBank, RegClass, RegClassData, RegInfo, RegUnit};
+
+include!(concat!(env!("OUT_DIR"), "/registers-arm32.rs"));
+
+#[cfg(test)]
+mod tests {
+    use super::{D, GPR, INFO, S};
+    use crate::isa::RegUnit;
+    use std::string::{String, ToString};
+
+    #[test]
+    fn unit_encodings() {
+        assert_eq!(INFO.parse_regunit("s0"), Some(0));
+        assert_eq!(INFO.parse_regunit("s31"), Some(31));
+        assert_eq!(INFO.parse_regunit("s32"), Some(32));
+        assert_eq!(INFO.parse_regunit("r0"), Some(64));
+        assert_eq!(INFO.parse_regunit("r15"), Some(79));
+    }
+
+    #[test]
+    fn unit_names() {
+        fn uname(ru: RegUnit) -> String {
+            INFO.display_regunit(ru).to_string()
+        }
+
+        assert_eq!(uname(0), "%s0");
+        assert_eq!(uname(1), "%s1");
+        assert_eq!(uname(31), "%s31");
+        assert_eq!(uname(64), "%r0");
+    }
+
+    #[test]
+    fn overlaps() {
+        // arm32 has the most interesting register geometries, so test `regs_overlap()` here.
+        use crate::isa::regs_overlap;
+
+        let r0 = GPR.unit(0);
+        let r1 = GPR.unit(1);
+        let r2 = GPR.unit(2);
+
+        assert!(regs_overlap(GPR, r0, GPR, r0));
+        assert!(regs_overlap(GPR, r2, GPR, r2));
+        assert!(!regs_overlap(GPR, r0, GPR, r1));
+        assert!(!regs_overlap(GPR, r1, GPR, r0));
+        assert!(!regs_overlap(GPR, r2, GPR, r1));
+        assert!(!regs_overlap(GPR, r1, GPR, r2));
+
+        let s0 = S.unit(0);
+        let s1 = S.unit(1);
+        let s2 = S.unit(2);
+        let s3 = S.unit(3);
+        let d0 = D.unit(0);
+        let d1 = D.unit(1);
+
+        assert!(regs_overlap(S, s0, D, d0));
+        assert!(regs_overlap(S, s1, D, d0));
+        assert!(!regs_overlap(S, s0, D, d1));
+        assert!(!regs_overlap(S, s1, D, d1));
+        assert!(regs_overlap(S, s2, D, d1));
+        assert!(regs_overlap(S, s3, D, d1));
+        assert!(!regs_overlap(D, d1, S, s1));
+        assert!(regs_overlap(D, d1, S, s2));
+        assert!(!regs_overlap(D, d0, D, d1));
+        assert!(regs_overlap(D, d1, D, d1));
+    }
+}