PR79066, non-PIC code generated for powerpc glibc with -fpic

	PR target/79066
	* config/rs6000/rs6000.md (elf_high, elf_low): Disable when pic.
	* config/rs6000/rs6000.c (rs6000_emit_allocate_stack): Don't allow
	symbolic stack limit when pic.
testsuite/
	* gcc.target/powerpc/pr79066.c: New.

From-SVN: r244515

gcc/ChangeLog

+2017-01-17  Alan Modra  <amodra@gmail.com>
+
+	PR target/79066
+	* config/rs6000/rs6000.md (elf_high, elf_low): Disable when pic.
+	* config/rs6000/rs6000.c (rs6000_emit_allocate_stack): Don't allow
+	symbolic stack limit when pic.
+
 2017-01-16  Martin Sebor  <msebor@redhat.com>
 
 	PR tree-optimization/78608

gcc/config/rs6000/rs6000.c

@@ -27669,7 +27669,8 @@ rs6000_emit_allocate_stack (HOST_WIDE_INT size, rtx copy_reg, int copy_off)
 	}
       else if (GET_CODE (stack_limit_rtx) == SYMBOL_REF
 	       && TARGET_32BIT
-	       && DEFAULT_ABI == ABI_V4)
+	       && DEFAULT_ABI == ABI_V4
+	       && !flag_pic)
 	{
 	  rtx toload = gen_rtx_CONST (VOIDmode,
 				      gen_rtx_PLUS (Pmode,

gcc/config/rs6000/rs6000.md

@@ -10581,14 +10581,14 @@
 (define_insn "elf_high"
   [(set (match_operand:SI 0 "gpc_reg_operand" "=b*r")
 	(high:SI (match_operand 1 "" "")))]
-  "TARGET_ELF && ! TARGET_64BIT"
+  "TARGET_ELF && !TARGET_64BIT && !flag_pic"
   "lis %0,%1@ha")
 
 (define_insn "elf_low"
   [(set (match_operand:SI 0 "gpc_reg_operand" "=r")
 	(lo_sum:SI (match_operand:SI 1 "gpc_reg_operand" "b")
 		   (match_operand 2 "" "")))]
-   "TARGET_ELF && ! TARGET_64BIT"
+   "TARGET_ELF && !TARGET_64BIT && !flag_pic"
    "la %0,%2@l(%1)")
 
 ;; Call and call_value insns

gcc/testsuite/ChangeLog

+2017-01-17  Alan Modra  <amodra@gmail.com>
+
+	* gcc.target/powerpc/pr79066.c: New.
+
 2017-01-16  Jeff Law  <law@redhat.com>
 
 	PR tree-optimization/33562

gcc/testsuite/gcc.target/powerpc/pr79066.c

+/* { dg-do compile { target { fpic && ilp32 } } } */
+/* { dg-options "-O2 -fpic" } */
+/* { dg-final { scan-assembler-not "lis.*@ha" } } */
+
+union U { double x; int i[2]; };
+
+double
+foo (double x)
+{
+  union U v;
+  v.i[0] = 0x7ff00000;
+  v.i[1] = 0;
+  return x / v.x;
+}