Add effective target signal

2017-06-10  Tom de Vries  <tom@codesourcery.com>

	* lib/target-supports.exp (check_effective_target_signal): New proc.
	* lib/gcc.exp (gcc_target_compile): Remove appending of
	-DSIGNAL_SUPPRESS to additional_flags.
	* gcc.c-torture/execute/ieee/ieee.exp: Add -DSIGNAL_SUPPRESS to
	additional_flags if effective target signal is not supported by the
	target.
	* gcc.c-torture/execute/20101011-1.c: Same.
	* gcc.dg/c99-stdint-1.c: Same.
	* gcc.dg/c99-stdint-2.c: Same.
	* gcc.dg/c99-stdint-5.c: Same.
	* gcc.dg/c99-stdint-6.c: Same.
	* gcc.dg/stdint-width-1.c: Same.

	* doc/sourcebuild.texi (Effective-Target Keywords, Environment
	attributes): Document signal effective target.

From-SVN: r249091

gcc/ChangeLog

 2017-06-10  Tom de Vries  <tom@codesourcery.com>
 
+	* doc/sourcebuild.texi (Effective-Target Keywords, Environment
+	attributes): Document signal effective target.
+
+2017-06-10  Tom de Vries  <tom@codesourcery.com>
+
 	* doc/sourcebuild.texi (Effective-Target Keywords, Other attributes):
 	Document effective target stack_size.
 

gcc/doc/sourcebuild.texi

@@ -1973,6 +1973,9 @@ time) should be run on this target.  This can be enabled by setting the
 Test system runs executables on a simulator (i.e. slowly) rather than
 hardware (i.e. fast).
 
+@item signal
+Target has @code{signal.h}.
+
 @item stabs
 Target supports the stabs debugging format.
 

gcc/testsuite/ChangeLog

 2017-06-10  Tom de Vries  <tom@codesourcery.com>
 
+	* lib/target-supports.exp (check_effective_target_signal): New proc.
+	* lib/gcc.exp (gcc_target_compile): Remove appending of
+	-DSIGNAL_SUPPRESS to additional_flags.
+	* gcc.c-torture/execute/ieee/ieee.exp: Add -DSIGNAL_SUPPRESS to
+	additional_flags if effective target signal is not supported by the
+	target.
+	* gcc.c-torture/execute/20101011-1.c: Same.
+	* gcc.dg/c99-stdint-1.c: Same.
+	* gcc.dg/c99-stdint-2.c: Same.
+	* gcc.dg/c99-stdint-5.c: Same.
+	* gcc.dg/c99-stdint-6.c: Same.
+	* gcc.dg/stdint-width-1.c: Same.
+
+2017-06-10  Tom de Vries  <tom@codesourcery.com>
+
 	* lib/target-supports.exp (check_effective_target_stack_size)
 	(dg-effective-target-value): New proc.
 	* lib/gcc.exp (gcc_target_compile): Remove adding of DSTACK_SIZE to

gcc/testsuite/gcc.c-torture/execute/20101011-1.c

 /* { dg-options "-fnon-call-exceptions" } */
 /* With -fnon-call-exceptions 0 / 0 should not be eliminated.  */
+/* { dg-additional-options "-DSIGNAL_SUPPRESS" { target { ! signal } } } */
 
 #ifdef SIGNAL_SUPPRESS
 # define DO_TEST 0

gcc/testsuite/gcc.c-torture/execute/ieee/ieee.exp

@@ -53,6 +53,10 @@ if { [istarget "alpha*-*-*"]
   lappend additional_flags "-mieee"
 }
 
+if { ![check_effective_target_signal] } {
+    lappend additional_flags "-DSIGNAL_SUPPRESS"
+}
+
 # load support procs
 load_lib c-torture.exp
 

gcc/testsuite/gcc.dg/c99-stdint-1.c

@@ -10,6 +10,7 @@
 /* { dg-do compile } */
 /* { dg-options "-std=iso9899:1999 -pedantic-errors -fhosted" } */
 /* { dg-require-effective-target ptr32plus } */
+/* { dg-additional-options "-DSIGNAL_SUPPRESS" { target { ! signal } } } */
 
 #include <limits.h>
 #include <stdint.h>

gcc/testsuite/gcc.dg/c99-stdint-2.c

@@ -3,6 +3,8 @@
 /* { dg-do compile } */
 /* { dg-options "-std=iso9899:1999 -pedantic-errors -ffreestanding" } */
 /* { dg-require-effective-target ptr32plus } */
+/* { dg-additional-options "-DSIGNAL_SUPPRESS" { target { ! signal } } } */
+
 /* The test is that there are no diagnostics, so just include the
    hosted version.  */
 #include "c99-stdint-1.c"

gcc/testsuite/gcc.dg/c99-stdint-5.c

@@ -3,6 +3,7 @@
    compilations).  */
 /* { dg-do compile } */
 /* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
+/* { dg-additional-options "-DSIGNAL_SUPPRESS" { target { ! signal } } } */
 
 #include <stdint.h>
 #ifndef SIGNAL_SUPPRESS

gcc/testsuite/gcc.dg/c99-stdint-6.c

@@ -2,6 +2,7 @@
    with any system <inttypes.h> header.  */
 /* { dg-do compile { target inttypes_types } } */
 /* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
+/* { dg-additional-options "-DSIGNAL_SUPPRESS" { target { ! signal } } } */
 
 #include <inttypes.h>
 #ifndef SIGNAL_SUPPRESS

gcc/testsuite/gcc.dg/stdint-width-1.c

 /* Test TS 18661-1 width macros in <stdint.h>.  */
 /* { dg-do compile } */
 /* { dg-options "-std=c11 -ffreestanding" } */
+/* { dg-additional-options "-DSIGNAL_SUPPRESS" { target { ! signal } } } */
 
 #include <stddef.h>
 #define __STDC_WANT_IEC_60559_BFP_EXT__

gcc/testsuite/lib/gcc.exp

@@ -141,10 +141,6 @@ proc gcc_target_compile { source dest type options } {
 	lappend options "ldflags=$TEST_EXTRA_LIBS"
     }
 
-    if [target_info exists gcc,signal_suppress] {
-	lappend options "additional_flags=-DSIGNAL_SUPPRESS"
-    }
-
     # TEST_ALWAYS_FLAGS are flags that should be passed to every
     # compilation.  They are passed first to allow individual
     # tests to override them.

gcc/testsuite/lib/target-supports.exp

@@ -525,6 +525,15 @@ proc dg-effective-target-value { effective_target } {
     return 0
 }
 
+# Return 1 if signal.h is supported.
+
+proc check_effective_target_signal { } {
+    if [target_info exists gcc,signal_suppress] {
+      return 0
+    }
+    return 1
+}
+
 # Return 1 if according to target_info struct and explicit target list
 # target disables -fdelete-null-pointer-checks.  Targets should return 0
 # if they simply default to -fno-delete-null-pointer-checks but obey