reload1.c (reload_cse_regno_equal_p): If -ffloat-store, don't consider a MEM in FP...

        * reload1.c (reload_cse_regno_equal_p): If -ffloat-store, don't
        consider a MEM in FP mode as equal.
Stolen from gcc2 sources.  Fixes problem from Debian folks.

From-SVN: r20571

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index faa14ec939e42398f45c57c35078d768c7409eb5..2aca4aafdf7c49e8cc192ff3af7e9b3e41bea0f6 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Fri Jun 19 02:00:19 1998  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+
+       * reload1.c (reload_cse_regno_equal_p): If -ffloat-store, don't
+       consider a MEM in FP mode as equal.
+
 Fri Jun 19 01:02:17 1998  Jeffrey A Law  (law@cygnus.com)
 
        * c-decl.c (duplicate_decls): Avoid setting TREE_ASM_WRITTEN for

diff --git a/gcc/reload1.c b/gcc/reload1.c
index 2373f8864f1fbca4f201ee269d3f93888610e0b3..22203929b1dbd892e401a8e5120cc04019ecb9ea 100644 (file)
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -8352,6 +8352,8 @@ reload_cse_regno_equal_p (regno, val, mode)
   for (x = reg_values[regno]; x; x = XEXP (x, 1))
     if (XEXP (x, 0) != 0
        && rtx_equal_p (XEXP (x, 0), val)
+       && (! flag_float_store || GET_CODE (XEXP (x, 0)) != MEM
+           || GET_MODE_CLASS (GET_MODE (x)) != MODE_FLOAT)
        && (GET_CODE (val) != CONST_INT
            || mode == GET_MODE (x)
            || (GET_MODE_SIZE (mode) < GET_MODE_SIZE (GET_MODE (x))