[PATCH 5/6] Simplify rs6000_builtin_vectorized_function

[Richard Sandiford]

After the previous patches it's no longer necessary for
TARGET_BUILTIN_VECTORIZED_FUNCTION to return functions that
map to the vector optab of the original operation.  We'll use
a vector form of the internal function instead.


gcc/
        * config/rs6000/rs6000.c (rs6000_builtin_vectorized_function): Remove
        entries that map directly to optabs.

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 26a0410..aa55b8e 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4913,19 +4913,6 @@ rs6000_builtin_vectorized_function (unsigned int fn, 
tree type_out,
 
   switch (fn)
     {
-    CASE_CFN_CLZ:
-      if (TARGET_P8_VECTOR && in_mode == out_mode && out_n == in_n)
-       {
-         if (out_mode == QImode && out_n == 16)
-           return rs6000_builtin_decls[P8V_BUILTIN_VCLZB];
-         else if (out_mode == HImode && out_n == 8)
-           return rs6000_builtin_decls[P8V_BUILTIN_VCLZH];
-         else if (out_mode == SImode && out_n == 4)
-           return rs6000_builtin_decls[P8V_BUILTIN_VCLZW];
-         else if (out_mode == DImode && out_n == 2)
-           return rs6000_builtin_decls[P8V_BUILTIN_VCLZD];
-       }
-      break;
     CASE_CFN_COPYSIGN:
       if (VECTOR_UNIT_VSX_P (V2DFmode)
          && out_mode == DFmode && out_n == 2
@@ -4940,29 +4927,6 @@ rs6000_builtin_vectorized_function (unsigned int fn, 
tree type_out,
          && in_mode == SFmode && in_n == 4)
        return rs6000_builtin_decls[ALTIVEC_BUILTIN_COPYSIGN_V4SF];
       break;
-    CASE_CFN_POPCOUNT:
-      if (TARGET_P8_VECTOR && in_mode == out_mode && out_n == in_n)
-       {
-         if (out_mode == QImode && out_n == 16)
-           return rs6000_builtin_decls[P8V_BUILTIN_VPOPCNTB];
-         else if (out_mode == HImode && out_n == 8)
-           return rs6000_builtin_decls[P8V_BUILTIN_VPOPCNTH];
-         else if (out_mode == SImode && out_n == 4)
-           return rs6000_builtin_decls[P8V_BUILTIN_VPOPCNTW];
-         else if (out_mode == DImode && out_n == 2)
-           return rs6000_builtin_decls[P8V_BUILTIN_VPOPCNTD];
-       }
-      break;
-    CASE_CFN_SQRT:
-      if (VECTOR_UNIT_VSX_P (V2DFmode)
-         && out_mode == DFmode && out_n == 2
-         && in_mode == DFmode && in_n == 2)
-       return rs6000_builtin_decls[VSX_BUILTIN_XVSQRTDP];
-      if (VECTOR_UNIT_VSX_P (V4SFmode)
-         && out_mode == SFmode && out_n == 4
-         && in_mode == SFmode && in_n == 4)
-       return rs6000_builtin_decls[VSX_BUILTIN_XVSQRTSP];
-      break;
     CASE_CFN_CEIL:
       if (VECTOR_UNIT_VSX_P (V2DFmode)
          && out_mode == DFmode && out_n == 2