re PR target/60179 (target optimization attribute streaming is broken)

2014-05-21  Cesar Philippidis  <cesar@codesourcery.com>
	    Sandra Loosemore  <sandra@codesourcery.com>

	PR lto/60179
 
	gcc/testsuite/
	* lib/scanasm.exp (scan-lto-assembler): New procedure.
	* gcc.target/nios2/custom-fp-lto.c: New test.

Co-Authored-By: Sandra Loosemore <sandra@codesourcery.com>

From-SVN: r210714

gcc/testsuite/ChangeLog

+2014-05-21  Cesar Philippidis  <cesar@codesourcery.com>
+	    Sandra Loosemore  <sandra@codesourcery.com>
+
+	PR lto/60179
+	* lib/scanasm.exp (scan-lto-assembler): New procedure.
+	* gcc.target/nios2/custom-fp-lto.c: New test.
+
 2014-05-21  Andreas Schwab  <schwab@suse.de>
 
 	* g++.dg/cpp0x/pr61038.C (operator "" _s): Use size_t.

gcc/testsuite/gcc.target/nios2/custom-fp-lto.c

+/* Test specification of custom instructions via pragma in the presence
+   of LTO.  This test case formerly failed due to PR60179.  */
+
+/* { dg-do link } */
+/* { dg-require-effective-target lto } */
+/* { dg-options "-O1 -flto -flto-partition=one -save-temps" } */
+
+/* -O1 in the options is significant.  Without it FP operations may not be
+   optimized to custom instructions.  */
+
+#include <stdio.h> 
+#include <math.h>
+
+#pragma GCC target ("custom-fabss=224")
+
+float
+custom_fp (float operand_a)
+{
+  return fabsf (operand_a);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return custom_fp ((float)argc) > 1.0;
+}
+
+/* { dg-final { scan-lto-assembler "custom\\t224, " } } */
+/* { dg-final { cleanup-saved-temps } } */

gcc/testsuite/lib/scanasm.exp

@@ -500,3 +500,13 @@ proc dg-function-on-line { args } {
 
     append final-code "$cmd\n"
 }
+
+# Look for a pattern in the .exe.ltrans0.s file produced by the
+# compiler.  See dg-scan for details.
+
+proc scan-lto-assembler { args } {
+    set testcase [testname-for-summary]
+    set output_file "[file rootname [file tail $testcase]].exe.ltrans0.s"
+    verbose "output_file: $output_file"
+    dg-scan "scan-assembler" 1 $testcase $output_file $args
+}