mips: Fix up mips_atomic_assign_expand_fenv [PR94780]

Commit message shamelessly copied from 1777beb6b129 by jakub:

This function, because it is sometimes called even outside of function
bodies, uses create_tmp_var_raw rather than create_tmp_var.  But in order
for that to work, when first referenced, the VAR_DECLs need to appear in a
TARGET_EXPR so that during gimplification the var gets the right
DECL_CONTEXT and is added to local decls.

gcc/

	PR target/94780
	* config/mips/mips.c (mips_atomic_assign_expand_fenv): Use
	  TARGET_EXPR instead of MODIFY_EXPR.

(cherry picked from commit 2065654435e3d97676366f82b939bc9273382dbe)

diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 701b259ebdb199a901e3f6b0bdc2b2f8cb33028e..bb6ff08e94c20e67fc3f53259b9b10b2fb992775 100644 (file)
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -22438,12 +22438,12 @@ mips_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update)
   tree get_fcsr = mips_builtin_decls[MIPS_GET_FCSR];
   tree set_fcsr = mips_builtin_decls[MIPS_SET_FCSR];
   tree get_fcsr_hold_call = build_call_expr (get_fcsr, 0);
-  tree hold_assign_orig = build2 (MODIFY_EXPR, MIPS_ATYPE_USI,
-                                 fcsr_orig_var, get_fcsr_hold_call);
+  tree hold_assign_orig = build4 (TARGET_EXPR, MIPS_ATYPE_USI,
+                                 fcsr_orig_var, get_fcsr_hold_call, NULL, NULL);
   tree hold_mod_val = build2 (BIT_AND_EXPR, MIPS_ATYPE_USI, fcsr_orig_var,
                              build_int_cst (MIPS_ATYPE_USI, 0xfffff003));
-  tree hold_assign_mod = build2 (MODIFY_EXPR, MIPS_ATYPE_USI,
-                                fcsr_mod_var, hold_mod_val);
+  tree hold_assign_mod = build4 (TARGET_EXPR, MIPS_ATYPE_USI,
+                                fcsr_mod_var, hold_mod_val, NULL, NULL);
   tree set_fcsr_hold_call = build_call_expr (set_fcsr, 1, fcsr_mod_var);
   tree hold_all = build2 (COMPOUND_EXPR, MIPS_ATYPE_USI,
                          hold_assign_orig, hold_assign_mod);
@@ -22453,8 +22453,8 @@ mips_atomic_assign_expand_fenv (tree *hold, tree *clear, tree *update)
   *clear = build_call_expr (set_fcsr, 1, fcsr_mod_var);
 
   tree get_fcsr_update_call = build_call_expr (get_fcsr, 0);
-  *update = build2 (MODIFY_EXPR, MIPS_ATYPE_USI,
-                   exceptions_var, get_fcsr_update_call);
+  *update = build4 (TARGET_EXPR, MIPS_ATYPE_USI,
+                   exceptions_var, get_fcsr_update_call, NULL, NULL);
   tree set_fcsr_update_call = build_call_expr (set_fcsr, 1, fcsr_orig_var);
   *update = build2 (COMPOUND_EXPR, void_type_node, *update,
                    set_fcsr_update_call);