sourcebuild.texi (arm_hf_eabi): Document effective-target check.

    gcc/
    * doc/sourcebuild.texi (arm_hf_eabi): Document effective-target
    check.

    gcc/testsuite/
    * lib/target-supports.exp (check_effective_target_arm_hf_eabi): New.
    * gcc.dg/torture/stackalign/builtin-apply-2.c: Skip for
    hard-float ARM.

From-SVN: r189805

gcc/ChangeLog

+2012-07-24  Julian Brown  <julian@codesourcery.com>
+
+	* doc/sourcebuild.texi (arm_hf_eabi): Document effective-target
+	check.
+
 2012-07-24  Steven Bosscher  <steven@gcc.gnu.org>
 
 	* sbitmap.h (SBITMAP_ELT_BITS): Use "1u" trick as for BITMAP_WORD_BITS.

gcc/doc/sourcebuild.texi

@@ -1497,6 +1497,11 @@ ARM target generates 32-bit code.
 @item arm_eabi
 ARM target adheres to the ABI for the ARM Architecture.
 
+@item arm_hf_eabi
+ARM target adheres to the VFP and Advanced SIMD Register Arguments
+variant of the ABI for the ARM Architecture (as selected with
+@code{-mfloat-abi=hard}).
+
 @item arm_hard_vfp_ok
 ARM target supports @code{-mfpu=vfp -mfloat-abi=hard}.
 Some multilibs may be incompatible with these options.

gcc/testsuite/ChangeLog

+2012-07-24  Julian Brown  <julian@codesourcery.com>
+
+	* lib/target-supports.exp (check_effective_target_arm_hf_eabi): New.
+	* gcc.dg/torture/stackalign/builtin-apply-2.c: Skip for
+	hard-float ARM.
+
 2012-07-23  Paul Brook  <paul@codesourcery.com>
 
 	* g++.dg/other/armv7m-1.c: New test.

gcc/testsuite/gcc.dg/torture/stackalign/builtin-apply-2.c

@@ -5,6 +5,8 @@
    with pre-pushed arguments (e.g. SPARC).  */
 
 /* { dg-do run } */
+
+/* { dg-skip-if "Variadic funcs use Base AAPCS.  Normal funcs use VFP variant." { arm_hf_eabi } } */
    
 
 #define INTEGER_ARG  5

gcc/testsuite/lib/target-supports.exp

@@ -2341,6 +2341,19 @@ proc check_effective_target_arm_eabi { } {
     }]
 }
 
+# Return 1 if this is an ARM target that adheres to the hard-float variant of
+# the ABI for the ARM Architecture (e.g. -mfloat-abi=hard).
+
+proc check_effective_target_arm_hf_eabi { } {
+    return [check_no_compiler_messages arm_hf_eabi object {
+	#if !defined(__ARM_EABI__) || !defined(__ARM_PCS_VFP)
+	#error not hard-float EABI
+	#else
+	int dummy;
+	#endif
+    }]
+}
+
 # Return 1 if this is an ARM target supporting -mcpu=iwmmxt.
 # Some multilibs may be incompatible with this option.