Re: [PATCH] C-SKY: Fix for gcc.dg/torture/stackalign/builtin-return-2.c.

[Cooper Qu via Gcc-patches]

Pushed.

On 4/30/21 9:02 PM, Geng Qi wrote:

gcc/ChangeLog:

        * config/csky/csky.md (untyped_call): Emit clobber for return
        registers to mark them used.
---
  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 b980d4c..f91d851 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);