| ; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution | FileCheck %s |
| ; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s |
| |
| target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" |
| target triple = "i386-apple-darwin9.6" |
| |
| define i64 @foo(i64* nocapture %x, i64 %n) nounwind { |
| ; CHECK-LABEL: Classifying expressions for: @foo |
| entry: |
| %t0 = icmp sgt i64 %n, 0 |
| br i1 %t0, label %bb, label %return |
| |
| bb: |
| %i.01 = phi i64 [ 0, %entry ], [ %indvar.next, %bb ] |
| %t1 = shl i64 %i.01, 7 |
| %t2 = ashr i64 %t1, 7 |
| ; CHECK: %t2 = ashr i64 %t1, 7 |
| ; CHECK-NEXT: sext i57 {0,+,199}<%bb> to i64 |
| ; CHECK-SAME: Exits: (sext i57 (-199 + (trunc i64 %n to i57)) to i64) |
| ; CHECK: %s2 = ashr i64 %s1, 5 |
| ; CHECK-NEXT: sext i59 {0,+,199}<%bb> to i64 |
| ; CHECK-SAME: Exits: (sext i59 (-199 + (trunc i64 %n to i59)) to i64) |
| %s1 = shl i64 %i.01, 5 |
| %s2 = ashr i64 %s1, 5 |
| %t3 = getelementptr i64, i64* %x, i64 %i.01 |
| store i64 0, i64* %t3, align 1 |
| %indvar.next = add i64 %i.01, 199 |
| %exitcond = icmp eq i64 %indvar.next, %n |
| br i1 %exitcond, label %return, label %bb |
| |
| return: |
| %p = phi i64 [ 0, %entry ], [ %t2, %bb ] |
| %q = phi i64 [ 0, %entry ], [ %s2, %bb ] |
| %v = xor i64 %p, %q |
| ret i64 %v |
| } |