htm.md (tabort.): Restrict the source operand to using a base register.

gcc/
	* config/rs6000/htm.md (tabort.): Restrict the source operand to
	using a base register.

gcc/testsuite/
	* gcc.target/powerpc/htm-tabort-no-r0.c: New test.

From-SVN: r226532

gcc/ChangeLog

+2015-08-03  Peter Bergner  <bergner@vnet.ibm.com>
+
+	* config/rs6000/htm.md (tabort.): Restrict the source operand to
+	using a base register.
+
 2015-08-03  David Malcolm  <dmalcolm@redhat.com>
 
 	* main.c (main): Pass in NULL for toplev's external_timer.

gcc/config/rs6000/htm.md

@@ -48,7 +48,7 @@
 
 (define_insn "tabort"
   [(set (match_operand:CC 1 "cc_reg_operand" "=x")
-	(unspec_volatile:CC [(match_operand:SI 0 "gpc_reg_operand" "r")]
+	(unspec_volatile:CC [(match_operand:SI 0 "base_reg_operand" "b")]
 			    UNSPECV_HTM_TABORT))]
   "TARGET_HTM"
   "tabort. %0"

gcc/testsuite/ChangeLog

+2015-08-03  Peter Bergner  <bergner@vnet.ibm.com>
+
+	* gcc.target/powerpc/htm-tabort-no-r0.c: New test.
+
 2015-08-03  David Malcolm  <dmalcolm@redhat.com>
 
 	* jit.dg/test-benchmark.c (test_jit): Add param "timer" and use

gcc/testsuite/gcc.target/powerpc/htm-tabort-no-r0.c

+/* { dg-do compile { target { powerpc*-*-* } } } */
+/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
+/* { dg-require-effective-target powerpc_htm_ok } */
+/* { dg-options "-O2 -mhtm -ffixed-r3 -ffixed-r4 -ffixed-r5 -ffixed-r6 -ffixed-r7 -ffixed-r8 -ffixed-r9 -ffixed-r10 -ffixed-r11 -ffixed-r12" } */
+
+/* { dg-final { scan-assembler-not "tabort\\.\[ \t\]0" } } */
+
+int
+foo (void)
+{
+  return __builtin_tabort (10);
+}