package/gcc: backport fix for xtensa PR 90922

Stack pointer adjustment code in xtensa call0 ABI prologue missed a case
of no callee-saved registers and a stack frame size bigger than 128 bytes.
Handle that case.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 9fd7ad8e71a99b33230d83d0c195e218452fb45c)
[Peter: drop 9.2.0 patch]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gcc/7.4.0/1002-xtensa-backport-fix-for-PR-target-90922.patch

@@ -0,0 +1,43 @@
+From a592242578e573778241cae6d3928c064dcdfda4 Mon Sep 17 00:00:00 2001
+From: jcmvbkbc <jcmvbkbc@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 18 Jun 2019 22:19:12 +0000
+Subject: [PATCH] xtensa: fix for PR target/90922
+
+Stack pointer adjustment code in prologue missed a case of no
+callee-saved registers and a stack frame size bigger than 128 bytes.
+Handle that case.
+
+This fixes the following gcc tests with call0 ABI:
+  gcc.c-torture/execute/stdarg-2.c
+  gcc.dg/torture/pr55882.c
+  gcc.dg/torture/pr57569.c
+
+gcc/
+2019-06-18  Max Filippov  <jcmvbkbc@gmail.com>
+
+	* config/xtensa/xtensa.c (xtensa_expand_prologue): Add stack
+	pointer adjustment for the case of no callee-saved registers and
+	stack frame bigger than 128 bytes.
+
+Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
+---
+ gcc/config/xtensa/xtensa.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
+index 19bd616d67f6..ee5612441e25 100644
+--- a/gcc/config/xtensa/xtensa.c
++++ b/gcc/config/xtensa/xtensa.c
+@@ -2802,7 +2802,8 @@ xtensa_expand_prologue (void)
+ 			    gen_rtx_SET (mem, reg));
+ 	    }
+ 	}
+-      if (total_size > 1024)
++      if (total_size > 1024
++	  || (!callee_save_size && total_size > 128))
+ 	{
+ 	  rtx tmp_reg = gen_rtx_REG (Pmode, A9_REG);
+ 	  emit_move_insn (tmp_reg, GEN_INT (total_size -
+-- 
+2.11.0
+

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

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