toolchain/gcc/patches/8.3.0/0001-xtensa-backport-fix-for-PR-target-90922.patch

   1 From a592242578e573778241cae6d3928c064dcdfda4 Mon Sep 17 00:00:00 2001
   2 From: jcmvbkbc <jcmvbkbc@138bc75d-0d04-0410-961f-82ee72b054a4>
   3 Date: Tue, 18 Jun 2019 22:19:12 +0000
   4 Subject: [PATCH] xtensa: fix for PR target/90922
   5
   6 Stack pointer adjustment code in prologue missed a case of no
   7 callee-saved registers and a stack frame size bigger than 128 bytes.
   8 Handle that case.
   9
  10 This fixes the following gcc tests with call0 ABI:
  11   gcc.c-torture/execute/stdarg-2.c
  12   gcc.dg/torture/pr55882.c
  13   gcc.dg/torture/pr57569.c
  14
  15 gcc/
  16 2019-06-18  Max Filippov  <jcmvbkbc@gmail.com>
  17
  18         * config/xtensa/xtensa.c (xtensa_expand_prologue): Add stack
  19         pointer adjustment for the case of no callee-saved registers and
  20         stack frame bigger than 128 bytes.
  21
  22 Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
  23 ---
  24  gcc/config/xtensa/xtensa.c | 3 ++-
  25  1 file changed, 2 insertions(+), 1 deletion(-)
  26
  27 diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
  28 index 19bd616d67f6..ee5612441e25 100644
  29 --- a/gcc/config/xtensa/xtensa.c
  30 +++ b/gcc/config/xtensa/xtensa.c
  31 @@ -2862,7 +2862,8 @@ xtensa_expand_prologue (void)
  32                             gen_rtx_SET (mem, reg));
  33             }
  34         }
  35 -      if (total_size > 1024)
  36 +      if (total_size > 1024
  37 +         || (!callee_save_size && total_size > 128))
  38         {
  39           rtx tmp_reg = gen_rtx_REG (Pmode, A9_REG);
  40           emit_move_insn (tmp_reg, GEN_INT (total_size -
  41 --
  42 2.11.0
  43