re PR target/79947 (ICE in rs6000_emit_swsqrt at gcc/config/rs6000/rs6000.c:37570)

[gcc]
2017-03-14  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/79947
	* config/rs6000/rs6000.h (TARGET_FRSQRTES): Add check for
	-mpowerpc-gfxopt.

[gcc/testsuite]
2017-03-14  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/79947
	* gcc.target/powerpc/pr79947.c: New test.

From-SVN: r246150

gcc/ChangeLog

+2017-03-14  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	PR target/79947
+	* config/rs6000/rs6000.h (TARGET_FRSQRTES): Add check for
+	-mpowerpc-gfxopt.
+
 2017-03-14  Martin Sebor  <msebor@redhat.com>
 
 	PR middle-end/80020

gcc/config/rs6000/rs6000.h

@@ -752,7 +752,8 @@ extern int rs6000_vector_align[];
 			 && (TARGET_POPCNTB || VECTOR_UNIT_VSX_P (DFmode)))
 
 #define TARGET_FRSQRTES	(TARGET_HARD_FLOAT && TARGET_POPCNTB \
-			 && TARGET_FPRS && TARGET_SINGLE_FLOAT)
+			 && TARGET_PPC_GFXOPT && TARGET_FPRS \
+			 && TARGET_SINGLE_FLOAT)
 
 #define TARGET_FRSQRTE	(TARGET_HARD_FLOAT && TARGET_FPRS \
 			 && TARGET_DOUBLE_FLOAT \

gcc/testsuite/ChangeLog

+2017-03-14  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	PR target/79947
+	* gcc.target/powerpc/pr79947.c: New test.
+
 2017-03-14  Martin Sebor  <msebor@redhat.com>
 
 	PR middle-end/80020

gcc/testsuite/gcc.target/powerpc/pr79947.c

+/* { dg-do compile { target { powerpc*-*-* } } } */
+/* { dg-options "-Ofast -mno-powerpc-gfxopt -mcmpb -mno-vsx" } */
+
+/* PR 79949: Compiler segmentation fault due to not having conditional move
+   support for the target if the -mno-powerpc-gfxopt option is used.  */
+
+float a, b;
+void
+c ()
+{
+  a = __builtin_sqrtf (b);
+}