[PATCH 1/1] RISC-V: Enable RVC on ".option arch, +zca" etc.

[Tsukasa OI]

From: Tsukasa OI <research_trasio@irq.a4lg.com>

Since the 'Zca' extension is the new base of the compressed instructions,
this commit enables RVC *also* when the 'Zca' extension is enabled
via ".option arch" directive.

gas/ChangeLog:

	* config/tc-riscv.c (s_riscv_option): Enable RVC also when the
	'Zca' extension is enabled after an ".option arch" directive.
---
 gas/config/tc-riscv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c
index 80c14a3cd221..aaf8b9be64fd 100644
--- a/gas/config/tc-riscv.c
+++ b/gas/config/tc-riscv.c
@@ -4376,7 +4376,8 @@ s_riscv_option (int x ATTRIBUTE_UNUSED)
       riscv_reset_subsets_list_arch_str ();
 
       riscv_set_rvc (false);
-      if (riscv_subset_supports (&riscv_rps_as, "c"))
+      if (riscv_subset_supports (&riscv_rps_as, "c")
+	  || riscv_subset_supports (&riscv_rps_as, "zca"))
 	riscv_set_rvc (true);
 
       if (riscv_subset_supports (&riscv_rps_as, "ztso"))
-- 
2.41.0