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67ae135759
Similarly inlining of the function is inhibited, if that would duplicate the call (in particular inlining is still allowed when there is only one callsite and the function has internal linkage). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170704 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.2 KiB
LLVM
48 lines
1.2 KiB
LLVM
; RUN: opt < %s -loop-unroll -S | FileCheck %s
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; This should not unroll since the address of the loop header is taken.
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; CHECK: @test1
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; CHECK: store i8* blockaddress(@test1, %l1), i8** %P
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; CHECK: l1:
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; CHECK-NEXT: phi i32
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; rdar://8287027
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define i32 @test1(i8** %P) nounwind ssp {
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entry:
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store i8* blockaddress(@test1, %l1), i8** %P
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br label %l1
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l1: ; preds = %l1, %entry
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%x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
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%inc = add nsw i32 %x.0, 1
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%exitcond = icmp eq i32 %inc, 3
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br i1 %exitcond, label %l2, label %l1
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l2: ; preds = %l1
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ret i32 0
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}
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; This should not unroll since the call is 'noduplicate'.
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; CHECK: @test2
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define i32 @test2(i8** %P) nounwind ssp {
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entry:
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br label %l1
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l1: ; preds = %l1, %entry
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%x.0 = phi i32 [ 0, %entry ], [ %inc, %l1 ]
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; CHECK: call void @f()
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; CHECK-NOT: call void @f()
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call void @f() noduplicate
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%inc = add nsw i32 %x.0, 1
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%exitcond = icmp eq i32 %inc, 3
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br i1 %exitcond, label %l2, label %l1
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l2: ; preds = %l1
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ret i32 0
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; CHECK: }
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}
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declare void @f()
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