[pushed] Remove some unused poly_int variables

[pushed] Remove some unused poly_int variables

[Richard Sandiford]

Switching to default constructors for poly_int exposed some
unused variables that weren't previously diagnosed.

Tested on aarch64-linux-gnu & x86_64-linux-gnu, pushed as obvious.

Richard


gcc/
	* dwarf2out.cc (mem_loc_descriptor): Remove unused variables.
	* tree-affine.cc (expr_to_aff_combination): Likewise.

gcc/cp/
	* constexpr.cc (cxx_fold_indirect_ref): Remove unused variables.

gcc/rust/
	* backend/rust-constexpr.cc (rs_fold_indirect_ref): Remove unused
	variables.
---
 gcc/cp/constexpr.cc                | 1 -
 gcc/dwarf2out.cc                   | 1 -
 gcc/rust/backend/rust-constexpr.cc | 1 -
 gcc/tree-affine.cc                 | 1 -
 4 files changed, 4 deletions(-)

diff --git a/gcc/cp/constexpr.cc b/gcc/cp/constexpr.cc
index 2a6601c0cbc..0f948db7c2d 100644
--- a/gcc/cp/constexpr.cc
+++ b/gcc/cp/constexpr.cc
@@ -5643,7 +5643,6 @@ cxx_fold_indirect_ref (const constexpr_ctx *ctx, location_t loc, tree type,
 {
   tree sub = op0;
   tree subtype;
-  poly_uint64 const_op01;
 
   /* STRIP_NOPS, but stop if REINTERPRET_CAST_P.  */
   while (CONVERT_EXPR_P (sub) || TREE_CODE (sub) == NON_LVALUE_EXPR
diff --git a/gcc/dwarf2out.cc b/gcc/dwarf2out.cc
index f60a0656d8f..ad2be7c961a 100644
--- a/gcc/dwarf2out.cc
+++ b/gcc/dwarf2out.cc
@@ -15967,7 +15967,6 @@ mem_loc_descriptor (rtx rtl, machine_mode mode,
   enum dwarf_location_atom op;
   dw_loc_descr_ref op0, op1;
   rtx inner = NULL_RTX;
-  poly_int64 offset;
 
   if (mode == VOIDmode)
     mode = GET_MODE (rtl);
diff --git a/gcc/rust/backend/rust-constexpr.cc b/gcc/rust/backend/rust-constexpr.cc
index 4e581a3f2cf..b28fa27b2d0 100644
--- a/gcc/rust/backend/rust-constexpr.cc
+++ b/gcc/rust/backend/rust-constexpr.cc
@@ -737,7 +737,6 @@ rs_fold_indirect_ref (const constexpr_ctx *ctx, location_t loc, tree type,
 {
   tree sub = op0;
   tree subtype;
-  poly_uint64 const_op01;
 
   /* STRIP_NOPS, but stop if REINTERPRET_CAST_P.  */
   while (CONVERT_EXPR_P (sub) || TREE_CODE (sub) == NON_LVALUE_EXPR
diff --git a/gcc/tree-affine.cc b/gcc/tree-affine.cc
index ee327e63a23..ecab4671ab4 100644
--- a/gcc/tree-affine.cc
+++ b/gcc/tree-affine.cc
@@ -268,7 +268,6 @@ expr_to_aff_combination (aff_tree *comb, tree_code code, tree type,
 			 tree op0, tree op1 = NULL_TREE)
 {
   aff_tree tmp;
-  poly_int64 bitpos, bitsize, bytepos;
 
   switch (code)
     {
-- 
2.25.1