re PR debug/59992 (Compilation of insn-recog.c too slow due to var-tracking)

	PR debug/59992
	* var-tracking.c (adjust_mems): Before adding a SET
	to amd->side_effects, adjust it's SET_SRC using
	simplify_replace_fn_rtx.

	* gcc.dg/pr59992.c: New test.

From-SVN: r207562

gcc/ChangeLog

+2014-02-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/59992
+	* var-tracking.c (adjust_mems): Before adding a SET
+	to amd->side_effects, adjust it's SET_SRC using
+	simplify_replace_fn_rtx.
+
 2014-02-06  Alan Modra  <amodra@gmail.com>
 
 	PR target/60032

gcc/testsuite/ChangeLog

+2014-02-06  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/59992
+	* gcc.dg/pr59992.c: New test.
+
 2014-02-06  Marc Glisse  <marc.glisse@inria.fr>
 
 	* g++.dg/cpp0x/constexpr-attribute2.C: Restrict to target

gcc/testsuite/gcc.dg/pr59992.c

+/* PR debug/59992 */
+/* { dg-do compile } */
+/* { dg-require-effective-target run_expensive_tests } */
+/* { dg-options "-O2 -g" } */
+/* { dg-timeout-factor 16.0 } */
+
+#define A(n) if (p[n]) { extern void foo##n (int, int, double, int, int); foo##n (p[n], 5, 8.0, p[n] + p[n + 1], 9); return; }
+#define B(n) A(n##0) A(n##1) A(n##2) A(n##3) A(n##4) A(n##5) A(n##6) A(n##7) A(n##8) A(n##9)
+#define C(n) B(n##0) B(n##1) B(n##2) B(n##3) B(n##4) B(n##5) B(n##6) B(n##7) B(n##8) B(n##9)
+#define D(n) C(n##0) C(n##1) C(n##2) C(n##3) C(n##4) C(n##5) C(n##6) C(n##7) C(n##8) C(n##9)
+#define E(n) D(n##0) D(n##1) D(n##2) D(n##3) D(n##4) D(n##5) D(n##6) D(n##7) D(n##8) D(n##9)
+
+void
+foo (int *p)
+{
+  E(1)
+}

gcc/var-tracking.c

@@ -1067,10 +1067,13 @@ adjust_mems (rtx loc, const_rtx old_rtx, void *data)
 					? GET_MODE_SIZE (amd->mem_mode)
 					: -GET_MODE_SIZE (amd->mem_mode),
 					GET_MODE (loc)));
+      store_save = amd->store;
+      amd->store = false;
+      tem = simplify_replace_fn_rtx (tem, old_rtx, adjust_mems, data);
+      amd->store = store_save;
       amd->side_effects = alloc_EXPR_LIST (0,
 					   gen_rtx_SET (VOIDmode,
-							XEXP (loc, 0),
-							tem),
+							XEXP (loc, 0), tem),
 					   amd->side_effects);
       return addr;
     case PRE_MODIFY:
@@ -1080,10 +1083,14 @@ adjust_mems (rtx loc, const_rtx old_rtx, void *data)
 	addr = XEXP (loc, 0);
       gcc_assert (amd->mem_mode != VOIDmode);
       addr = simplify_replace_fn_rtx (addr, old_rtx, adjust_mems, data);
+      store_save = amd->store;
+      amd->store = false;
+      tem = simplify_replace_fn_rtx (XEXP (loc, 1), old_rtx,
+				     adjust_mems, data);
+      amd->store = store_save;
       amd->side_effects = alloc_EXPR_LIST (0,
 					   gen_rtx_SET (VOIDmode,
-							XEXP (loc, 0),
-							XEXP (loc, 1)),
+							XEXP (loc, 0), tem),
 					   amd->side_effects);
       return addr;
     case SUBREG: