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[ShrinkWrapping] Add a test case for r247710.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247713 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Quentin Colombet 2015-09-15 18:51:43 +00:00
parent f3abce4a8e
commit bd22a1dc62
1 changed files with 30 additions and 0 deletions
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30
test/CodeGen/X86/x86-shrink-wrapping.ll
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@ -667,3 +667,33 @@ for.body: ; preds = %for.body, %entry
if.end:
ret void
}
; Another infinite loop test this time with a body bigger than just one block.
; CHECK-LABEL: infiniteloop2
; CHECK: retq
define void @infiniteloop2() {
entry:
br i1 undef, label %if.then, label %if.end
if.then:
%ptr = alloca i32, i32 4
br label %for.body
for.body: ; preds = %for.body, %entry
%sum.03 = phi i32 [ 0, %if.then ], [ %add, %body1 ], [ 1, %body2]
%call = tail call i32 asm "movl $$1, $0", "=r,~{ebx}"()
%add = add nsw i32 %call, %sum.03
store i32 %add, i32* %ptr
br i1 undef, label %body1, label %body2
body1:
tail call void asm sideeffect "nop", "~{ebx}"()
br label %for.body
body2:
tail call void asm sideeffect "nop", "~{ebx}"()
br label %for.body
if.end:
ret void
}