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- ; RUN: opt < %s -loop-unroll -S | FileCheck %s
- ; This should not unroll since the address of the loop header is taken.
- ; CHECK-LABEL: @test1(
- ; CHECK: store i8* blockaddress(@test1, %l1), i8** %P
- ; CHECK: l1:
- ; CHECK-NEXT: phi i32
- ; rdar://8287027
- define i32 @test1(i8** %P) nounwind ssp {
- entry:
- store i8* blockaddress(@test1, %l1), i8** %P
- br label %l1
- l1: ; preds = %l1, %entry
- %x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
- %inc = add nsw i32 %x.0, 1
- %exitcond = icmp eq i32 %inc, 3
- br i1 %exitcond, label %l2, label %l1
- l2: ; preds = %l1
- ret i32 0
- }
- ; This should not unroll since the call is 'noduplicate'.
- ; CHECK-LABEL: @test2(
- define i32 @test2(i8** %P) nounwind ssp {
- entry:
- br label %l1
- l1: ; preds = %l1, %entry
- %x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
- ; CHECK: call void @f()
- ; CHECK-NOT: call void @f()
- call void @f() noduplicate
- %inc = add nsw i32 %x.0, 1
- %exitcond = icmp eq i32 %inc, 3
- br i1 %exitcond, label %l2, label %l1
- l2: ; preds = %l1
- ret i32 0
- ; CHECK: }
- }
- declare void @f()
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