| 12345678910111213141516171819202122232425262728293031323334353637 |
- ; RUN: opt < %s -scalar-evolution -analyze | FileCheck %s
- ; CHECK: Loop %bb3: backedge-taken count is (-1 + %n)
- ; We don't want to use a max in the trip count expression in
- ; this testcase.
- define void @foo(i32 %n, i32* %p, i32* %q) nounwind {
- entry:
- icmp sgt i32 %n, 0
- br i1 %0, label %bb, label %return
- bb:
- load i32, i32* %q, align 4
- icmp eq i32 %1, 0
- br i1 %2, label %return, label %bb3.preheader
- bb3.preheader:
- br label %bb3
- bb3:
- %i.0 = phi i32 [ %7, %bb3 ], [ 0, %bb3.preheader ]
- getelementptr i32, i32* %p, i32 %i.0
- load i32, i32* %3, align 4
- add i32 %4, 1
- getelementptr i32, i32* %p, i32 %i.0
- store i32 %5, i32* %6, align 4
- add i32 %i.0, 1
- icmp slt i32 %7, %n
- br i1 %8, label %bb3, label %return.loopexit
- return.loopexit:
- br label %return
- return:
- ret void
- }
|
