[gcc r11-3449] [testsuite] Add effective target ident_directive

[Tom de Vries <vries@gcc.gnu.org>]

https://gcc.gnu.org/g:fa91ca7f506b162d5f0afcffd2d7d562da6aa7fa

commit r11-3449-gfa91ca7f506b162d5f0afcffd2d7d562da6aa7fa
Author: Tom de Vries <tdevries@suse.de>
Date:   Thu Sep 24 10:49:02 2020 +0200

    [testsuite] Add effective target ident_directive
    
    On nvptx we run into:
    ...
    FAIL: c-c++-common/ident-1b.c  -Wc++-compat   scan-assembler GCC:
    FAIL: c-c++-common/ident-2b.c  -Wc++-compat   scan-assembler GCC:
    ...
    
    Using a scan-assembler directive adds -fno-indent to the compile options.
    The test c-c++-common/ident-1b.c adds dg-options "-fident", and intends to
    check that the -fident overrides the -fno-indent, by means of the
    scan-assembler.  But for nvptx, there's no .ident directive, both with -fident
    and -fno-ident.
    
    Fix this by adding an effective target ident_directive, and requiring
    it in both test-cases.
    
    Tested on nvptx and x86_64.
    
    gcc/testsuite/ChangeLog:
    
    2020-09-24  Tom de Vries  <tdevries@suse.de>
    
            * lib/target-supports.exp (check_effective_target_ident_directive): New proc.
            * c-c++-common/ident-1b.c: Require effective target ident_directive.
            * c-c++-common/ident-2b.c: Same.

Diff:
---
 gcc/testsuite/c-c++-common/ident-1b.c | 1 +
 gcc/testsuite/c-c++-common/ident-2b.c | 1 +
 gcc/testsuite/lib/target-supports.exp | 9 +++++++++
 3 files changed, 11 insertions(+)

diff --git a/gcc/testsuite/c-c++-common/ident-1b.c b/gcc/testsuite/c-c++-common/ident-1b.c
index 69567442a03..b8b83e64ad2 100644
--- a/gcc/testsuite/c-c++-common/ident-1b.c
+++ b/gcc/testsuite/c-c++-common/ident-1b.c
@@ -2,6 +2,7 @@
  * Make sure scan-assembler turns off .ident unless -fident in testcase */
 /* { dg-do compile } */
 /* { dg-options "-fident" } */
+/* { dg-require-effective-target ident_directive }*/
 int i;
 
 /* { dg-final { scan-assembler "GCC: " { xfail { { hppa*-*-hpux* && { ! lp64 } } || { powerpc-ibm-aix* || powerpc*-*-darwin* } } } } } */
diff --git a/gcc/testsuite/c-c++-common/ident-2b.c b/gcc/testsuite/c-c++-common/ident-2b.c
index fae6a031571..52f0693e164 100644
--- a/gcc/testsuite/c-c++-common/ident-2b.c
+++ b/gcc/testsuite/c-c++-common/ident-2b.c
@@ -2,6 +2,7 @@
  * Make sure scan-assembler-times turns off .ident unless -fident in testcase */
 /* { dg-do compile } */
 /* { dg-options "-fident" } */
+/* { dg-require-effective-target ident_directive }*/
 int ident;
 
 /* { dg-final { scan-assembler "GCC: " { xfail { { hppa*-*-hpux* && { ! lp64 } } || { powerpc-ibm-aix* || powerpc*-*-darwin* } } } } } */
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 5cbe32ffbd6..0a00972edb5 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -10510,3 +10510,12 @@ proc check_symver_available { } {
 	    }
 	}]
 }
+
+# Return 1 if emitted assembly contains .ident directive.
+
+proc check_effective_target_ident_directive {} {
+    return [check_no_messages_and_pattern ident_directive \
+		"(?n)^\[\t\]+\\.ident" assembly {
+	int i;
+    }]
+}