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; REQUIRES: asserts
; RUN: opt < %s -S -Os -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OS
; RUN: opt < %s -S -Oz -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OZ
; RUN: opt < %s -S -passes='default<Os>' -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OS
; RUN: opt < %s -S -passes='default<Oz>' -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OZ
;; Make sure -allow-loop-header-duplication overrides the default behavior at Oz
; RUN: opt < %s -S -passes='default<Oz>' -enable-loop-header-duplication -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OS
; Loop should be rotated for -Os but not for -Oz.
; OS: rotating Loop at depth 1
; OZ-NOT: rotating Loop at depth 1
@e = global i32 10
declare void @use(i32)
define void @test() {
entry:
%end = load i32, ptr @e
br label %loop
loop:
%n.phi = phi i32 [ %n, %loop.fin ], [ 0, %entry ]
%cond = icmp eq i32 %n.phi, %end
br i1 %cond, label %exit, label %loop.fin
loop.fin:
%n = add i32 %n.phi, 1
call void @use(i32 %n)
br label %loop
exit:
ret void
}
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