/* Support for hash table construction and transformations. */
static bool oprs_unchanged_p (rtx, rtx, bool);
-static void record_last_reg_set_info (rtx, int);
+static void record_last_reg_set_info (rtx, rtx);
+static void record_last_reg_set_info_regno (rtx, int);
static void record_last_mem_set_info (rtx);
static void record_last_set_info (rtx, const_rtx, void *);
static void record_opr_changes (rtx);
/* Record register first/last/block set information for REGNO in INSN. */
static inline void
-record_last_reg_set_info (rtx insn, int regno)
+record_last_reg_set_info (rtx insn, rtx reg)
+{
+ unsigned int regno, end_regno;
+
+ regno = REGNO (reg);
+ end_regno = END_HARD_REGNO (reg);
+ do
+ reg_avail_info[regno] = INSN_CUID (insn);
+ while (++regno < end_regno);
+}
+
+static inline void
+record_last_reg_set_info_regno (rtx insn, int regno)
{
reg_avail_info[regno] = INSN_CUID (insn);
}
dest = SUBREG_REG (dest);
if (REG_P (dest))
- record_last_reg_set_info (last_set_insn, REGNO (dest));
+ record_last_reg_set_info (last_set_insn, dest);
else if (MEM_P (dest))
{
/* Ignore pushes, they don't clobber memory. They may still
if (! push_operand (dest, GET_MODE (dest)))
record_last_mem_set_info (last_set_insn);
else
- record_last_reg_set_info (last_set_insn, STACK_POINTER_REGNUM);
+ record_last_reg_set_info_regno (last_set_insn, STACK_POINTER_REGNUM);
}
}
/* Also record autoincremented REGs for this insn as changed. */
for (note = REG_NOTES (insn); note; note = XEXP (note, 1))
if (REG_NOTE_KIND (note) == REG_INC)
- record_last_reg_set_info (insn, REGNO (XEXP (note, 0)));
+ record_last_reg_set_info (insn, XEXP (note, 0));
/* Finally, if this is a call, record all call clobbers. */
if (CALL_P (insn))
{
- unsigned int regno, end_regno;
+ unsigned int regno;
rtx link, x;
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
if (TEST_HARD_REG_BIT (regs_invalidated_by_call, regno))
- record_last_reg_set_info (insn, regno);
+ record_last_reg_set_info_regno (insn, regno);
for (link = CALL_INSN_FUNCTION_USAGE (insn); link; link = XEXP (link, 1))
if (GET_CODE (XEXP (link, 0)) == CLOBBER)
if (REG_P (x))
{
gcc_assert (HARD_REGISTER_P (x));
- regno = REGNO (x);
- end_regno = END_HARD_REGNO (x);
- do
- record_last_reg_set_info (insn, regno);
- while (++regno < end_regno);
+ record_last_reg_set_info (insn, x);
}
}
--- /dev/null
+/* { dg-do run } */
+/* { dg-options "-O2 -fgcse-after-reload" } */
+
+extern void abort (void);
+
+__attribute__((noinline)) __complex__ float
+give_neg1 (void)
+{
+ __complex__ float res;
+ __real__ res = -1.0;
+ __imag__ res = 1.0;
+ return res;
+}
+
+__attribute__((noinline)) __complex__ float
+mycacoshf (__complex__ float x)
+{
+ __complex__ float res;
+ res = give_neg1 ();
+
+ /* We have to use the positive branch. */
+ if (__real__ res < 0.0)
+ {
+ unsigned a,b,c,d,e,f;
+ res = -res;
+ asm __volatile__ ("" : "=r" (a), "=r" (b), "=r" (c), "=r" (d), "=r" (e), "=r" (f));
+ }
+ return res;
+}
+
+int main()
+{
+ __complex__ float res = mycacoshf(1.0);
+ if (__imag__ res >= 0.0)
+ abort();
+ return 0;
+}