| ; RUN: opt < %s -passes='function(loop-simplify),loop-extract' -S | FileCheck %s |
| |
| @label = common local_unnamed_addr global ptr null |
| |
| ; CHECK: define |
| ; no outlined function |
| ; CHECK-NOT: define |
| define i32 @sterix(i32 %n) { |
| entry: |
| %tobool = icmp ne i32 %n, 0 |
| ; this blockaddress references a basic block that goes in the extracted loop |
| %cond = select i1 %tobool, ptr blockaddress(@sterix, %for.cond), ptr blockaddress(@sterix, %exit) |
| store ptr %cond, ptr @label |
| %cmp5 = icmp sgt i32 %n, 0 |
| br i1 %cmp5, label %for.body, label %exit |
| |
| for.cond: |
| %mul = shl nsw i32 %s.06, 1 |
| %exitcond = icmp eq i32 %inc, %n |
| br i1 %exitcond, label %exit.loopexit, label %for.body |
| |
| for.body: |
| %i.07 = phi i32 [ %inc, %for.cond ], [ 0, %entry ] |
| %s.06 = phi i32 [ %mul, %for.cond ], [ 1, %entry ] |
| %inc = add nuw nsw i32 %i.07, 1 |
| br label %for.cond |
| |
| exit.loopexit: |
| %phitmp = icmp ne i32 %s.06, 2 |
| %phitmp8 = zext i1 %phitmp to i32 |
| br label %exit |
| |
| exit: |
| %s.1 = phi i32 [ 1, %entry ], [ %phitmp8, %exit.loopexit ] |
| ret i32 %s.1 |
| } |