arcv: Fix ls_update for float loads/stores

Signed-off-by: Michiel Derhaeg <michiel@synopsys.com>

Author: MichielDerhaeg

gcc/config/riscv/arcv.cc

@@ -224,7 +224,8 @@ arcv_ls_update (rtx_insn *prev, rtx_insn *curr)
 
   enum attr_type p_type = get_attr_type (prev);
   /*Check if the prev instruction is load or store.  */
-  if (!(p_type == TYPE_LOAD || p_type == TYPE_STORE))
+  if (!(p_type == TYPE_LOAD || p_type == TYPE_STORE
+	|| p_type == TYPE_FPLOAD || p_type == TYPE_FPSTORE))
     return false;
 
   gcc_assert (prev_set && curr_set);
@@ -252,6 +253,7 @@ arcv_ls_update (rtx_insn *prev, rtx_insn *curr)
   switch (p_type)
     {
     case TYPE_LOAD:
+    case TYPE_FPLOAD:
       {
 	rtx p_src_addr = XEXP (SET_SRC (prev_set), 0);
 	if (!REG_P (p_src_addr))
@@ -268,6 +270,7 @@ arcv_ls_update (rtx_insn *prev, rtx_insn *curr)
       }
 
     case TYPE_STORE:
+    case TYPE_FPSTORE:
       {
 	rtx p_dst_addr = XEXP (SET_DEST (prev_set), 0);
 	if (!REG_P (p_dst_addr))

gcc/testsuite/gcc.target/riscv/arcv-fusion-ls-update-fp-dump.c

@@ -0,0 +1,33 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv32 } */
+/* { dg-skip-if "" { *-*-* } { "-g" "-flto" "-O0" "-O1" "-O3" "-Oz" "-Os" } } */
+/* { dg-options "-O2 -mtune=arc-v-rhx-100-series -march=rv32ifd_zfh -mabi=ilp32d -fdump-rtl-sched2" } */
+
+_Float16
+fuse_ls_update_h (_Float16 *p, int n)
+{
+  _Float16 sum = 0;
+  for (int i = 0; i < n; i++)
+    sum += *p++;
+  return sum;
+}
+
+float
+fuse_ls_update_f (float *p, int n)
+{
+  float sum = 0;
+  for (int i = 0; i < n; i++)
+    sum += *p++;
+  return sum;
+}
+
+double
+fuse_ls_update_d (double *p, int n)
+{
+  double sum = 0;
+  for (int i = 0; i < n; i++)
+    sum += *p++;
+  return sum;
+}
+
+/* { dg-final { scan-rtl-dump-times "ARCV_FUSE_LS_UPDATE \\(prev, curr\\)" 3 "sched2" } } */