1 ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s 2 3 target datalayout = "e-p:64:64:64-p1:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 4 target triple = "x86_64-unknown-linux-gnu" 5 6 @foo.a = internal constant [8 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7], align 16 7 @foo.a_as1 = internal addrspace(1) constant [8 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7], align 16 8 9 10 define i32 @foo() nounwind uwtable noinline { 11 entry: 12 br label %for.cond 13 14 for.cond: ; preds = %for.inc, %entry 15 %sum.0 = phi i32 [ 0, %entry ], [ %add, %for.inc ] 16 ; CHECK: --> %sum.0 Exits: 28 17 %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] 18 %cmp = icmp ult i32 %i.0, 8 19 br i1 %cmp, label %for.inc, label %for.end 20 21 for.inc: ; preds = %for.cond 22 %idxprom = sext i32 %i.0 to i64 23 %arrayidx = getelementptr inbounds [8 x i32]* @foo.a, i64 0, i64 %idxprom 24 %0 = load i32* %arrayidx, align 4 25 %add = add nsw i32 %sum.0, %0 26 %inc = add nsw i32 %i.0, 1 27 br label %for.cond 28 29 for.end: ; preds = %for.cond 30 ret i32 %sum.0 31 } 32 33 define i32 @foo_as1() nounwind uwtable noinline { 34 entry: 35 br label %for.cond 36 37 for.cond: ; preds = %for.inc, %entry 38 %sum.0 = phi i32 [ 0, %entry ], [ %add, %for.inc ] 39 ; CHECK: --> %sum.0 Exits: 28 40 %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] 41 %cmp = icmp ult i32 %i.0, 8 42 br i1 %cmp, label %for.inc, label %for.end 43 44 for.inc: ; preds = %for.cond 45 %idxprom = sext i32 %i.0 to i64 46 %arrayidx = getelementptr inbounds [8 x i32] addrspace(1)* @foo.a_as1, i64 0, i64 %idxprom 47 %0 = load i32 addrspace(1)* %arrayidx, align 4 48 %add = add nsw i32 %sum.0, %0 49 %inc = add nsw i32 %i.0, 1 50 br label %for.cond 51 52 for.end: ; preds = %for.cond 53 ret i32 %sum.0 54 } 55 56
