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Add some tests checking that the verifier rejects cases where a definition

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doesn't dominate a use.

llvm-svn: 157829
This commit is contained in:
Rafael Espindola 2012-06-01 19:24:57 +00:00
parent b9ec87406a
commit 353cca74a2
1 changed files with 57 additions and 0 deletions
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57
test/Verifier/dominates.ll Normal file
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; RUN: not llvm-as < %s -o /dev/null |& FileCheck %s
define i32 @f1(i32 %x) {
%y = add i32 %z, 1
%z = add i32 %x, 1
ret i32 %y
; CHECK: Instruction does not dominate all uses!
; CHECK-NEXT: %z = add i32 %x, 1
; CHECK-NEXT: %y = add i32 %z, 1
}
declare i32 @g()
define void @f2(i32 %x) {
bb0:
%y1 = invoke i32 @g() to label %bb1 unwind label %bb2
bb1:
ret void
bb2:
%y2 = phi i32 [%y1, %bb0]
%y3 = landingpad i32 personality i32 ()* @g
cleanup
ret void
; CHECK: Invoke result not available in the unwind destination!
; CHECK-NEXT: %y1 = invoke i32 @g()
; CHECK-NEXT: to label %bb1 unwind label %bb2
; CHECK-NEXT: %y2 = phi i32 [ %y1, %bb0 ]
}
define void @f3(i32 %x) {
bb0:
%y1 = invoke i32 @g() to label %bb1 unwind label %bb2
bb1:
ret void
bb2:
%y2 = landingpad i32 personality i32 ()* @g
cleanup
br label %bb3
bb3:
%y3 = phi i32 [%y1, %bb2]
ret void
; CHECK: Invoke result does not dominate all uses!
; CHECK-NEXT: %y1 = invoke i32 @g()
; CHECK-NEXT: to label %bb1 unwind label %bb2
; CHECK-NEXT: %y3 = phi i32 [ %y1, %bb2 ]
}
define void @f4(i32 %x) {
bb0:
br label %bb1
bb1:
%y3 = phi i32 [%y1, %bb0]
%y1 = add i32 %x, 1
ret void
; CHECK: Instruction does not dominate all uses!
; CHECK-NEXT: %y1 = add i32 %x, 1
; CHECK-NEXT: %y3 = phi i32 [ %y1, %bb0 ]
}