PartialInlineEntryPHICost.ll
1.08 KB
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; RUN: opt < %s -partial-inliner -S | FileCheck %s
; RUN: opt < %s -passes=partial-inliner -S | FileCheck %s
; Check that we do not overcompute the outlined region cost, where the PHIs in
; the outlined region entry (BB4) are moved outside the region by CodeExtractor.
define i32 @bar(i32 %arg) {
bb:
%tmp = icmp slt i32 %arg, 0
br i1 %tmp, label %bb1, label %bb2
bb1:
br i1 undef, label %bb4, label %bb2
bb2: ; preds = %bb, %bb1
br i1 undef, label %bb4, label %bb5
bb4: ; preds = %bb1, %bb2
%xx1 = phi i32 [ 1, %bb1 ], [ 9, %bb2 ]
%xx2 = phi i32 [ 1, %bb1 ], [ 9, %bb2 ]
%xx3 = phi i32 [ 1, %bb1 ], [ 9, %bb2 ]
tail call void (...) @foo() #2
br label %bb5
bb5: ; preds = %bb4, %bb2
%tmp6 = phi i32 [ 1, %bb2 ], [ 9, %bb4 ]
ret i32 %tmp6
}
declare void @foo(...)
define i32 @dummy_caller(i32 %arg) {
bb:
; CHECK-LABEL: @dummy_caller
; CHECK: br i1
; CHECK: br i1
; CHECK: call void @bar.1.
%tmp = tail call i32 @bar(i32 %arg)
ret i32 %tmp
}