[PATCH] Fix PR target/27571: ICE in get_attr_usegp, at config/alpha/alpha.md:171

[Falk Hueffner]

Hi,

this patch suggested by Steven Bosscher fixes the problem by skipping
jump table data "insns" when looking for insns that need the gp.

Tested on alphaev68-linux with c,c++,fortran,java,objc.

       Falk

2006-05-24  Steven Bosscher  <steven@gcc.gnu.org>

	PR target/27571
	* config/alpha/alpha.c (alpha_does_function_need_gp): Skip jump
	table data.

2006-05-24  Falk Hueffner  <falk@debian.org>

	* gcc.c-torture/compile/pr27571.c: New test.

Index: gcc/config/alpha/alpha.c
===================================================================
--- gcc/config/alpha/alpha.c	(revision 113950)
+++ gcc/config/alpha/alpha.c	(working copy)
@@ -7410,6 +7410,7 @@
 
   for (; insn; insn = NEXT_INSN (insn))
     if (INSN_P (insn)
+	&& ! JUMP_TABLE_DATA_P (insn)
 	&& GET_CODE (PATTERN (insn)) != USE
 	&& GET_CODE (PATTERN (insn)) != CLOBBER
 	&& get_attr_usegp (insn))
Index: gcc/testsuite/gcc.c-torture/compile/pr27571.c
===================================================================
--- gcc/testsuite/gcc.c-torture/compile/pr27571.c	(revision 0)
+++ gcc/testsuite/gcc.c-torture/compile/pr27571.c	(revision 0)
@@ -0,0 +1,27 @@
+/* PR target/27571
+   alpha_does_function_need_gp did not properly skip jump table insns  */
+
+int r3isseparator(int);
+void r3isdigit(int);
+void r3decimalvalue(int);
+
+void r7todouble(int *storage, int *count) {
+    int i = 0;
+    int state = 0;
+    int cc = 0;
+    while (i > *count) {
+	cc = *storage;
+	switch (state) {
+	case 0:
+	    if (r3isseparator(cc))
+		state = 1;
+	case 1:
+	    r3isdigit(cc);
+	case 2:
+	case 5:
+	case 6:
+	    r3decimalvalue(cc);
+	}
+	i++;
+    }
+}