| ; RUN: opt -loop-unroll -S %s | FileCheck %s |
| |
| ; Check that the loop body exists. |
| ; CHECK: for.body |
| ; CHECK: if.then |
| ; CHECK: asm.fallthrough |
| ; CHECK: l_yes |
| ; CHECK: for.inc |
| |
| ; Check that the loop body does not get unrolled. We could modify this test in |
| ; the future to support loop unrolling callbr's IFF we checked that the callbr |
| ; operands were unrolled/updated correctly, as today they are not. |
| ; CHECK-NOT: if.then.1 |
| ; CHECK-NOT: asm.fallthrough.1 |
| ; CHECK-NOT: l_yes.1 |
| ; CHECK-NOT: for.inc.1 |
| ; CHECK-NOT: if.then.2 |
| ; CHECK-NOT: asm.fallthrough.2 |
| ; CHECK-NOT: l_yes.2 |
| ; CHECK-NOT: for.inc.2 |
| |
| define dso_local void @d() { |
| entry: |
| br label %for.body |
| |
| for.cond.cleanup: ; preds = %for.inc |
| ret void |
| |
| for.body: ; preds = %for.inc, %entry |
| %e.04 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] |
| %tobool = icmp eq i32 %e.04, 0 |
| br i1 %tobool, label %for.inc, label %if.then |
| |
| if.then: ; preds = %for.body |
| callbr void asm sideeffect "1: nop\0A\09.quad b, ${0:l}, $$5\0A\09", "X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@d, %l_yes)) |
| to label %asm.fallthrough [label %l_yes] |
| |
| asm.fallthrough: ; preds = %if.then |
| br label %l_yes |
| |
| l_yes: ; preds = %asm.fallthrough, %if.then |
| %call = tail call i32 (...) @g() |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %l_yes |
| %inc = add nuw nsw i32 %e.04, 1 |
| %exitcond = icmp eq i32 %inc, 3 |
| br i1 %exitcond, label %for.cond.cleanup, label %for.body |
| } |
| |
| declare dso_local i32 @g(...) local_unnamed_addr |
