[PATCH] Fix RTL FE issue with premature return

[Richard Biener via Gcc-patches]

This fixes an issue discovered by -Wunreachable-code-return

Bootstrap / regtest pending on x86_64-unknown-linux-gnu, OK?

2021-11-29  Richard Biener  <rguent...@suse.de>

        * read-rtl-function.c (function_reader::read_rtx_operand):
        Return only after resetting m_in_call_function_usage.
---
 gcc/read-rtl-function.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/read-rtl-function.c b/gcc/read-rtl-function.c
index 5699f574a37..81d7531ce47 100644
--- a/gcc/read-rtl-function.c
+++ b/gcc/read-rtl-function.c
@@ -886,8 +886,9 @@ function_reader::read_rtx_operand (rtx x, int idx)
       if (idx == 7 && CALL_P (x))
        {
          m_in_call_function_usage = true;
-         return rtx_reader::read_rtx_operand (x, idx);
+         rtx tem = rtx_reader::read_rtx_operand (x, idx);
          m_in_call_function_usage = false;
+         return tem;
        }
       else
        return rtx_reader::read_rtx_operand (x, idx);
-- 
2.31.1