From bb6be30d6f7bf502e5e6fa28f460902ea03cd75b Mon Sep 17 00:00:00 2001
From: Huon Wilson <dbau.pp+github@gmail.com>
Date: Mon, 31 Aug 2015 15:06:00 -0700
Subject: [PATCH] Remove some SIMD codepaths from trans.

---
 src/librustc_trans/trans/consts.rs | 20 ++++---------------
 src/librustc_trans/trans/expr.rs   | 32 +++++-------------------------
 2 files changed, 9 insertions(+), 43 deletions(-)

diff --git a/src/librustc_trans/trans/consts.rs b/src/librustc_trans/trans/consts.rs
index 5b6da5dadd5..87a73c4d0a2 100644
--- a/src/librustc_trans/trans/consts.rs
+++ b/src/librustc_trans/trans/consts.rs
@@ -501,14 +501,9 @@ fn const_expr_unadjusted<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
             debug!("const_expr_unadjusted: te1={}, ty={:?}",
                    cx.tn().val_to_string(te1),
                    ty);
-            let is_simd = ty.is_simd();
-            let intype = if is_simd {
-                ty.simd_type(cx.tcx())
-            } else {
-                ty
-            };
-            let is_float = intype.is_fp();
-            let signed = intype.is_signed();
+            assert!(!ty.is_simd());
+            let is_float = ty.is_fp();
+            let signed = ty.is_signed();
 
             let (te2, _) = const_expr(cx, &**e2, param_substs, fn_args);
 
@@ -552,14 +547,7 @@ fn const_expr_unadjusted<'a, 'tcx>(cx: &CrateContext<'a, 'tcx>,
                         ConstFCmp(cmp, te1, te2)
                     } else {
                         let cmp = base::bin_op_to_icmp_predicate(cx, b.node, signed);
-                        let bool_val = ConstICmp(cmp, te1, te2);
-                        if is_simd {
-                            // LLVM outputs an `< size x i1 >`, so we need to perform
-                            // a sign extension to get the correctly sized type.
-                            llvm::LLVMConstIntCast(bool_val, val_ty(te1).to_ref(), True)
-                        } else {
-                            bool_val
-                        }
+                        ConstICmp(cmp, te1, te2)
                     }
                 },
             } } // unsafe { match b.node {
diff --git a/src/librustc_trans/trans/expr.rs b/src/librustc_trans/trans/expr.rs
index 20d189a5cd7..b4472881389 100644
--- a/src/librustc_trans/trans/expr.rs
+++ b/src/librustc_trans/trans/expr.rs
@@ -1693,14 +1693,9 @@ fn trans_eager_binop<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
     let _icx = push_ctxt("trans_eager_binop");
 
     let tcx = bcx.tcx();
-    let is_simd = lhs_t.is_simd();
-    let intype = if is_simd {
-        lhs_t.simd_type(tcx)
-    } else {
-        lhs_t
-    };
-    let is_float = intype.is_fp();
-    let is_signed = intype.is_signed();
+    assert!(!lhs_t.is_simd());
+    let is_float = lhs_t.is_fp();
+    let is_signed = lhs_t.is_signed();
     let info = expr_info(binop_expr);
 
     let binop_debug_loc = binop_expr.debug_loc();
@@ -1710,8 +1705,6 @@ fn trans_eager_binop<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
       ast::BiAdd => {
         if is_float {
             FAdd(bcx, lhs, rhs, binop_debug_loc)
-        } else if is_simd {
-            Add(bcx, lhs, rhs, binop_debug_loc)
         } else {
             let (newbcx, res) = with_overflow_check(
                 bcx, OverflowOp::Add, info, lhs_t, lhs, rhs, binop_debug_loc);
@@ -1722,8 +1715,6 @@ fn trans_eager_binop<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
       ast::BiSub => {
         if is_float {
             FSub(bcx, lhs, rhs, binop_debug_loc)
-        } else if is_simd {
-            Sub(bcx, lhs, rhs, binop_debug_loc)
         } else {
             let (newbcx, res) = with_overflow_check(
                 bcx, OverflowOp::Sub, info, lhs_t, lhs, rhs, binop_debug_loc);
@@ -1734,8 +1725,6 @@ fn trans_eager_binop<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
       ast::BiMul => {
         if is_float {
             FMul(bcx, lhs, rhs, binop_debug_loc)
-        } else if is_simd {
-            Mul(bcx, lhs, rhs, binop_debug_loc)
         } else {
             let (newbcx, res) = with_overflow_check(
                 bcx, OverflowOp::Mul, info, lhs_t, lhs, rhs, binop_debug_loc);
@@ -1828,11 +1817,7 @@ fn trans_eager_binop<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
           res
       }
       ast::BiEq | ast::BiNe | ast::BiLt | ast::BiGe | ast::BiLe | ast::BiGt => {
-        if is_simd {
-            base::compare_simd_types(bcx, lhs, rhs, intype, val_ty(lhs), op.node, binop_debug_loc)
-        } else {
-            base::compare_scalar_types(bcx, lhs, rhs, intype, op.node, binop_debug_loc)
-        }
+          base::compare_scalar_types(bcx, lhs, rhs, lhs_t, op.node, binop_debug_loc)
       }
       _ => {
         bcx.tcx().sess.span_bug(binop_expr.span, "unexpected binop");
@@ -2533,14 +2518,7 @@ fn build_unchecked_rshift<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
     let rhs = base::cast_shift_expr_rhs(bcx, ast::BinOp_::BiShr, lhs, rhs);
     // #1877, #10183: Ensure that input is always valid
     let rhs = shift_mask_rhs(bcx, rhs, binop_debug_loc);
-    let tcx = bcx.tcx();
-    let is_simd = lhs_t.is_simd();
-    let intype = if is_simd {
-        lhs_t.simd_type(tcx)
-    } else {
-        lhs_t
-    };
-    let is_signed = intype.is_signed();
+    let is_signed = lhs_t.is_signed();
     if is_signed {
         AShr(bcx, lhs, rhs, binop_debug_loc)
     } else {