+2006-09-09 Paolo Bonzini <bonzini@gnu.org>
+ Dale Johannesen <dalej@apple.com>
+
+ PR target/26778
+ * regclass.c (struct reg_pref): Update documentation.
+ (regclass): Set prefclass to NO_REGS if memory is the best option.
+ (record_reg_classes): Cope with a prefclass set to NO_REGS.
+
2006-09-08 Eric Christopher <echristo@apple.com>
* config.gcc (i?86-*-darwin): Add 64-bit HWI support.
/* Structure used to record preferences of given pseudo. */
struct reg_pref
{
- /* (enum reg_class) prefclass is the preferred class. */
+ /* (enum reg_class) prefclass is the preferred class. May be
+ NO_REGS if no class is better than memory. */
char prefclass;
/* altclass is a register class that we should use for allocating
best = reg_class_subunion[(int) best][class];
}
+ /* If no register class is better than memory, use memory. */
+ if (p->mem_cost < best_cost)
+ best = NO_REGS;
+
/* Record the alternate register class; i.e., a class for which
every register in it is better than using memory. If adding a
class would make a smaller class (i.e., no union of just those
to what we would add if this register were not in the
appropriate class. */
- if (reg_pref)
+ if (reg_pref && reg_pref[REGNO (op)].prefclass != NO_REGS)
alt_cost
+= (may_move_in_cost[mode]
[(unsigned char) reg_pref[REGNO (op)].prefclass]
to what we would add if this register were not in the
appropriate class. */
- if (reg_pref)
+ if (reg_pref && reg_pref[REGNO (op)].prefclass != NO_REGS)
alt_cost
+= (may_move_in_cost[mode]
[(unsigned char) reg_pref[REGNO (op)].prefclass]
int class;
unsigned int nr;
- if (regno >= FIRST_PSEUDO_REGISTER && reg_pref != 0)
+ if (regno >= FIRST_PSEUDO_REGISTER && reg_pref != 0
+ && reg_pref[regno].prefclass != NO_REGS)
{
enum reg_class pref = reg_pref[regno].prefclass;
+2006-09-09 Paolo Bonzini <bonzini@gnu.org>
+
+ PR testsuite/26778
+ * gcc.target/i386/pr26778.c: New testcase.
+
2006-09-08 Eric Christopher <echristo@apple.com>
* gcc.target/i386/20060512-3.c: Run test on ilp32 only.
PR c++/28711
* g++.dg/template/ctor8.C: New test.
+2006-08-17 Paolo Bonzini <bonzini@gnu.org>
+
+ * gcc.dg/pr26570.c: Fix testcase.
+
2006-08-17 Paolo Bonzini <bonzini@gnu.org>
* PR c++/28573
--- /dev/null
+/* { dg-do compile { target ilp32 } } */
+/* { dg-options "-O2 -march=pentium3" } */
+
+typedef union {
+ long long l;
+ double d;
+} db_number;
+
+double test(double x[3]) {
+ double th = x[1] + x[2];
+ if (x[2] != th - x[1]) {
+ db_number thdb;
+ thdb.d = th;
+ thdb.l++;
+ th = thdb.d;
+ }
+ return x[0] + th;
+}
+
+/* { dg-final { scan-assembler-not "mov.ps" } } */