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* [gcc r12-1058] C-SKY: Fix FAIL of gcc.dg/torture/stackalign/builtin-return-2.c.
@ 2021-05-26  6:37 qu
  0 siblings, 0 replies; only message in thread
From: qu @ 2021-05-26  6:37 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:155d3038c23002581eb29d59ea23e44b3758c6dc

commit r12-1058-g155d3038c23002581eb29d59ea23e44b3758c6dc
Author: Geng Qi <gengqi@linux.alibaba.com>
Date:   Fri Apr 30 21:02:37 2021 +0800

    C-SKY: Fix FAIL of gcc.dg/torture/stackalign/builtin-return-2.c.
    
    gcc/ChangeLog:
    
            * config/csky/csky.md (untyped_call): Emit clobber for return
            registers to mark them used.

Diff:
---
 gcc/config/csky/csky.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/config/csky/csky.md b/gcc/config/csky/csky.md
index b980d4c8fcb..f91d851cb2c 100644
--- a/gcc/config/csky/csky.md
+++ b/gcc/config/csky/csky.md
@@ -3258,6 +3258,10 @@
 
   emit_call_insn (gen_call (operands[0], const0_rtx));
 
+  for (int i = 0; i < XVECLEN (operands[2], 0); i++)
+    emit_clobber (SET_SRC (XVECEXP (operands[2], 0, i)));
+  emit_insn (gen_blockage ());
+
   for (i = 0; i < XVECLEN (operands[2], 0); i++)
     {
       rtx set = XVECEXP (operands[2], 0, i);


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