From: Alan Modra <amodra@gmail.com>
Date: Tue, 17 Jan 2017 02:54:11 +0000 (+1030)
Subject: PR79066, non-PIC code generated for powerpc glibc with -fpic
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e6750e5ce04bf778fc9bb0d07143b72cc6dc2c79;p=gcc.git

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
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ead236ff5fb..073b53ee843 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+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
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 29b3fd65624..37ad7d04c2f 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/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,
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index b3334749860..f00334a1d09 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/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
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 09c5d52aa4b..c00a050732b 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+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
diff --git a/gcc/testsuite/gcc.target/powerpc/pr79066.c b/gcc/testsuite/gcc.target/powerpc/pr79066.c
new file mode 100644
index 00000000000..86b20149bdf
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/pr79066.c
@@ -0,0 +1,14 @@
+/* { 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;
+}