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-rw-r--r--gcc/ChangeLog5
-rw-r--r--gcc/config/arm/arm.h6
2 files changed, 11 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fd2c294..4713756 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2003-06-14 Richard Earnshaw <rearnsha@arm.com>
+
+ PR target/11183
+ * arm.h (CANNOT_CHANGE_MODE_CLASS): Define.
+
2003-06-14 Roger Sayle <roger@eyesopen.com>
* opts.sh: Work around a mysterious feature in cygwin's gawk
diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h
index cffdd3b..acec706 100644
--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
@@ -1146,6 +1146,12 @@ enum reg_class
or could index an array. */
#define REGNO_REG_CLASS(REGNO) arm_regno_class (REGNO)
+/* FPA registers can't do dubreg as all values are reformatted to internal
+ precision. */
+#define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \
+ (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \
+ ? reg_classes_intersect_p (FPA_REGS, (CLASS)) : 0)
+
/* The class value for index registers, and the one for base regs. */
#define INDEX_REG_CLASS (TARGET_THUMB ? LO_REGS : GENERAL_REGS)
#define BASE_REG_CLASS (TARGET_THUMB ? LO_REGS : GENERAL_REGS)