[v3] Disable tests that require fesetround() on platforms without it

diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index 613ac29967b..793e2f353e8 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -2560,6 +2560,10 @@  Target supports @file{fenv.h} with all the standard IEEE exceptions
 and floating-point exceptions are raised by arithmetic operations for
 decimal floating point.
 
+@item fenv_setround
+Target supports @file{fenv.h} and any standard IEEE rounding mode that is
+defined is implemented in the environment under test.
+
 @item fileio
 Target offers such file I/O library functions as @code{fopen},
 @code{fclose}, @code{tmpnam}, and @code{remove}.  This is a link-time
diff --git a/gcc/testsuite/gcc.dg/torture/fp-double-convert-float-1.c b/gcc/testsuite/gcc.dg/torture/fp-double-convert-float-1.c
index ec23274ea98..656e5c345e7 100644
--- a/gcc/testsuite/gcc.dg/torture/fp-double-convert-float-1.c
+++ b/gcc/testsuite/gcc.dg/torture/fp-double-convert-float-1.c
@@ -1,6 +1,6 @@ 
 /* PR57245 */
 /* { dg-do run } */
-/* { dg-require-effective-target fenv } */
+/* { dg-require-effective-target fenv_setround } */
 /* { dg-additional-options "-frounding-math" } */
 
 #include <fenv.h>
diff --git a/gcc/testsuite/gcc.dg/torture/fp-int-convert-float128-timode-3.c b/gcc/testsuite/gcc.dg/torture/fp-int-convert-float128-timode-3.c
index c445d10522e..499e8c0cabf 100644
--- a/gcc/testsuite/gcc.dg/torture/fp-int-convert-float128-timode-3.c
+++ b/gcc/testsuite/gcc.dg/torture/fp-int-convert-float128-timode-3.c
@@ -4,7 +4,7 @@ 
 /* { dg-require-effective-target __float128 } */
 /* { dg-require-effective-target base_quadfloat_support } */
 /* { dg-require-effective-target int128 } */
-/* { dg-require-effective-target fenv } */
+/* { dg-require-effective-target fenv_setround } */
 /* { dg-options "-frounding-math" } */
 /* { dg-add-options __float128 } */
 
diff --git a/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-2.c b/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-2.c
index a82f03d079c..3f91f8f3833 100644
--- a/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-2.c
+++ b/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-2.c
@@ -2,7 +2,7 @@ 
    float.  */
 /* { dg-do run } */
 /* { dg-require-effective-target int128 } */
-/* { dg-require-effective-target fenv } */
+/* { dg-require-effective-target fenv_setround } */
 /* { dg-options "-frounding-math" } */
 
 #include <fenv.h>
diff --git a/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-3.c b/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-3.c
index 707d539335f..816fcb1120e 100644
--- a/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-3.c
+++ b/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-3.c
@@ -2,7 +2,7 @@ 
    float.  */
 /* { dg-do run } */
 /* { dg-require-effective-target int128 } */
-/* { dg-require-effective-target fenv } */
+/* { dg-require-effective-target fenv_setround } */
 /* { dg-options "-frounding-math" } */
 
 #include <fenv.h>
diff --git a/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-4.c b/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-4.c
index 09600f90903..6337a6d3f1e 100644
--- a/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-4.c
+++ b/gcc/testsuite/gcc.dg/torture/fp-int-convert-timode-4.c
@@ -2,7 +2,7 @@ 
    float.  */
 /* { dg-do run } */
 /* { dg-require-effective-target int128 } */
-/* { dg-require-effective-target fenv } */
+/* { dg-require-effective-target fenv_setround } */
 /* { dg-options "-frounding-math" } */
 
 #include <fenv.h>
diff --git a/gcc/testsuite/gcc.dg/torture/fp-uint64-convert-double-1.c b/gcc/testsuite/gcc.dg/torture/fp-uint64-convert-double-1.c
index fadad8c3198..43aeb81a602 100644
--- a/gcc/testsuite/gcc.dg/torture/fp-uint64-convert-double-1.c
+++ b/gcc/testsuite/gcc.dg/torture/fp-uint64-convert-double-1.c
@@ -1,6 +1,6 @@ 
 /* PR84407 */
 /* { dg-do run } */
-/* { dg-require-effective-target fenv } */
+/* { dg-require-effective-target fenv_setround } */
 /* { dg-additional-options "-frounding-math -fexcess-precision=standard" } */
 
 #include <fenv.h>
diff --git a/gcc/testsuite/gcc.dg/torture/fp-uint64-convert-double-2.c b/gcc/testsuite/gcc.dg/torture/fp-uint64-convert-double-2.c
index 952f96b33c9..d380b4a80e8 100644
--- a/gcc/testsuite/gcc.dg/torture/fp-uint64-convert-double-2.c
+++ b/gcc/testsuite/gcc.dg/torture/fp-uint64-convert-double-2.c
@@ -1,6 +1,6 @@ 
 /* PR84407 */
 /* { dg-do run } */
-/* { dg-require-effective-target fenv } */
+/* { dg-require-effective-target fenv_setround } */
 /* { dg-additional-options "-frounding-math" } */
 
 #include <fenv.h>
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 2d5d0539bb4..bd4dab0a9ad 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -10685,6 +10685,41 @@  proc check_effective_target_fenv_exceptions_dfp {} {
     } [add_options_for_ieee "-std=gnu99"]]
 }
 
+
+# Return 1 if <fenv.h> is availiable and supports fesetround.
+
+proc check_effective_target_fenv_setround {} {
+  return [check_runtime fenv_setround {
+    #include <fenv.h>
+    #include <stdlib.h>
+    int
+    main (void)
+    {
+      #ifdef FE_TONEAREST
+      if (fesetround (FE_TONEAREST) != 0)
+        abort ();
+      #endif
+
+      #ifdef FE_UPWARD
+      if (fesetround (FE_UPWARD) != 0)
+        abort ();
+      #endif
+
+      #ifdef FE_DOWNWARD
+      if (fesetround (FE_DOWNWARD) != 0)
+        abort ();
+      #endif
+
+      #ifdef FE_TOWARDZERO
+      if (fesetround (FE_TOWARDZERO) != 0)
+        abort ();
+      #endif
+
+      exit (0);
+    }
+  } [add_options_for_ieee "-std=gnu99"]]
+}
+
 # Return 1 if -fexceptions is supported.
 
 proc check_effective_target_exceptions {} {