Add Om1 lowering with no optimizations

crosstest/test_cast_to_u1.ll

Index: crosstest/test_cast_to_u1.ll
diff --git a/crosstest/test_cast_to_u1.ll b/crosstest/test_cast_to_u1.ll
new file mode 100644
index 0000000000000000000000000000000000000000..f8a9ec6f07bf4c4857c98fce84edd38801c1bce0
--- /dev/null
+++ b/crosstest/test_cast_to_u1.ll
@@ -0,0 +1,92 @@
+target triple = "i686-pc-linux-gnu"
+
+define i32 @_Z4castIxbET0_T_(i64 %a) {
+entry:
+;  %tobool = icmp ne i64 %a, 0
+  %tobool = trunc i64 %a to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}
+
+define i32 @_Z4castIybET0_T_(i64 %a) {
+entry:
+;  %tobool = icmp ne i64 %a, 0
+  %tobool = trunc i64 %a to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}
+
+define i32 @_Z4castIibET0_T_(i32 %a) {
+entry:
+;  %tobool = icmp ne i32 %a, 0
+  %tobool = trunc i32 %a to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}
+
+define i32 @_Z4castIjbET0_T_(i32 %a) {
+entry:
+;  %tobool = icmp ne i32 %a, 0
+  %tobool = trunc i32 %a to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}
+
+define i32 @_Z4castIsbET0_T_(i32 %a) {
+entry:
+  %a.arg_trunc = trunc i32 %a to i16
+;  %tobool = icmp ne i16 %a.arg_trunc, 0
+  %tobool = trunc i16 %a.arg_trunc to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}
+
+define i32 @_Z4castItbET0_T_(i32 %a) {
+entry:
+  %a.arg_trunc = trunc i32 %a to i16
+;  %tobool = icmp ne i16 %a.arg_trunc, 0
+  %tobool = trunc i16 %a.arg_trunc to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}
+
+define i32 @_Z4castIabET0_T_(i32 %a) {
+entry:
+  %a.arg_trunc = trunc i32 %a to i8
+;  %tobool = icmp ne i8 %a.arg_trunc, 0
+  %tobool = trunc i8 %a.arg_trunc to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}
+
+define i32 @_Z4castIhbET0_T_(i32 %a) {
+entry:
+  %a.arg_trunc = trunc i32 %a to i8
+;  %tobool = icmp ne i8 %a.arg_trunc, 0
+  %tobool = trunc i8 %a.arg_trunc to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}
+
+define i32 @_Z4castIbbET0_T_(i32 %a) {
+entry:
+  %a.arg_trunc = trunc i32 %a to i1
+  %a.arg_trunc.ret_ext = zext i1 %a.arg_trunc to i32
+  ret i32 %a.arg_trunc.ret_ext
+}
+
+define i32 @_Z4castIdbET0_T_(double %a) {
+entry:
+;  %tobool = fcmp une double %a, 0.000000e+00
+  %tobool = fptoui double %a to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}
+
+define i32 @_Z4castIfbET0_T_(float %a) {
+entry:
+;  %tobool = fcmp une float %a, 0.000000e+00
+  %tobool = fptoui float %a to i1
+  %tobool.ret_ext = zext i1 %tobool to i32
+  ret i32 %tobool.ret_ext
+}