On Visium, the compiler sometimes emits a NOP to avoid a pipeline hazard.
Tested on visium-elf and x86_64-suse-linux, applied on the mainline.
2018-01-16 Eric Botcazou <ebotca...@adacore.com>
* c-c++-common/patchable_function_entry-decl.c: Use 3 NOPs on Visium.
* c-c++-common/patchable_function_entry-default.c: Use 4 NOPs on Visium.
* c-c++-common/patchable_function_entry-definition.c: Use 2 NOPs on
Visium.
--
Eric Botcazou
Index: c-c++-common/patchable_function_entry-decl.c
===================================================================
--- c-c++-common/patchable_function_entry-decl.c (revision 256562)
+++ c-c++-common/patchable_function_entry-decl.c (working copy)
@@ -1,7 +1,8 @@
/* { dg-do compile { target { ! nvptx*-*-* } } } */
/* { dg-options "-O2 -fpatchable-function-entry=3,1" } */
-/* { dg-final { scan-assembler-times "nop" 2 { target { ! alpha*-*-* } } } } */
+/* { dg-final { scan-assembler-times "nop" 2 { target { ! { alpha*-*-* visium-*-* } } } } } */
/* { dg-final { scan-assembler-times "bis" 2 { target alpha*-*-* } } } */
+/* { dg-final { scan-assembler-times "nop" 3 { target visium-*-* } } } */
extern int a;
Index: c-c++-common/patchable_function_entry-default.c
===================================================================
--- c-c++-common/patchable_function_entry-default.c (revision 256562)
+++ c-c++-common/patchable_function_entry-default.c (working copy)
@@ -1,7 +1,8 @@
/* { dg-do compile { target { ! nvptx*-*-* } } } */
/* { dg-options "-O2 -fpatchable-function-entry=3,1" } */
-/* { dg-final { scan-assembler-times "nop" 3 { target { ! alpha*-*-* } } } } */
+/* { dg-final { scan-assembler-times "nop" 3 { target { ! { alpha*-*-* visium-*-* } } } } } */
/* { dg-final { scan-assembler-times "bis" 3 { target alpha*-*-* } } } */
+/* { dg-final { scan-assembler-times "nop" 4 { target visium-*-* } } } */
extern int a;
Index: c-c++-common/patchable_function_entry-definition.c
===================================================================
--- c-c++-common/patchable_function_entry-definition.c (revision 256562)
+++ c-c++-common/patchable_function_entry-definition.c (working copy)
@@ -1,7 +1,8 @@
/* { dg-do compile { target { ! nvptx*-*-* } } } */
/* { dg-options "-O2 -fpatchable-function-entry=3,1" } */
-/* { dg-final { scan-assembler-times "nop" 1 { target { ! alpha*-*-* } } } } */
+/* { dg-final { scan-assembler-times "nop" 1 { target { ! { alpha*-*-* visium-*-* } } } } } */
/* { dg-final { scan-assembler-times "bis" 1 { target alpha*-*-* } } } */
+/* { dg-final { scan-assembler-times "nop" 2 { target visium-*-* } } } */
extern int a;
