Z*inx is conflict with float extensions, add incompatible check when
z*inx and f extension both enabled.
Since all float extension imply f extension and all z*inx extension
imply zfinx extension, so we just need to check f with zfinx extension
as the base case.
Co-Authored by: Kito Cheng <kito.cheng@gmail.com>
gcc/ChangeLog:
* common/config/riscv/riscv-common.cc (riscv_subset_list::parse):
New check.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/arch-19.c: New test.
subset_list->handle_combine_ext ();
+ if (subset_list->lookup("zfinx") && subset_list->lookup("f"))
+ error_at (loc,
+ "%<-march=%s%>: z*inx is conflict with float extensions",
+ arch);
+
return subset_list;
fail:
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-march=rv64if_zfinx -mabi=lp64" } */
+int foo() {}
+/* { dg-error "'-march=rv64if_zfinx': z\\*inx is conflict with float extensions" "" { target *-*-* } 0 } */