| ; RUN: opt < %s -loop-rotate -S | FileCheck %s |
| ; RUN: opt < %s -loop-rotate -enable-mssa-loop-dependency=true -verify-memoryssa -S | FileCheck %s |
| |
| ; Test alloca in -loop-rotate. |
| |
| ; We expect a different value for %ptr each iteration (according to the |
| ; definition of alloca). I.e. each @use must be paired with an alloca. |
| |
| ; CHECK: call void @use(i8* % |
| ; CHECK: %ptr = alloca i8 |
| |
| @e = global i16 10 |
| |
| declare void @use(i8*) |
| |
| define void @test() { |
| entry: |
| %end = load i16, i16* @e |
| br label %loop |
| |
| loop: |
| %n.phi = phi i16 [ %n, %loop.fin ], [ 0, %entry ] |
| %ptr = alloca i8 |
| %cond = icmp eq i16 %n.phi, %end |
| br i1 %cond, label %exit, label %loop.fin |
| |
| loop.fin: |
| %n = add i16 %n.phi, 1 |
| call void @use(i8* %ptr) |
| br label %loop |
| |
| exit: |
| ret void |
| } |