forked from OSchip/llvm-project
48 lines
1.4 KiB
LLVM
48 lines
1.4 KiB
LLVM
; RUN: opt < %s -instcombine -S | grep "phi i32" | count 2
|
|
|
|
define void @test() nounwind {
|
|
entry:
|
|
br label %bb
|
|
|
|
bb: ; preds = %bb16, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %indvar.next, %somebb ] ; <i32> [#uses=1]
|
|
%x.0 = phi i32 [ 37, %entry ], [ %tmp17, %somebb ] ; <i32> [#uses=1]
|
|
%tmp = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
|
|
%tmp1 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
|
|
%tmp2 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=1]
|
|
%tmp3 = icmp eq i32 %tmp2, 0 ; <i1> [#uses=1]
|
|
br i1 %tmp3, label %bb7, label %bb5
|
|
|
|
bb5: ; preds = %bb
|
|
%tmp6 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
|
|
br label %bb7
|
|
|
|
bb7: ; preds = %bb5, %bb
|
|
%tmp8 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
|
|
%tmp9 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
|
|
%tmp11 = icmp eq i32 %x.0, 37 ; <i1> [#uses=1]
|
|
br i1 %tmp11, label %bb14, label %bb16
|
|
|
|
bb14: ; preds = %bb7
|
|
%tmp15 = tail call i32 (...) @bar( ) nounwind ; <i32> [#uses=0]
|
|
br label %bb16
|
|
|
|
bb16: ; preds = %bb14, %bb7
|
|
%tmp17 = tail call i32 (...) @zap( ) nounwind ; <i32> [#uses=1]
|
|
%indvar.next = add i32 %i.0, 1 ; <i32> [#uses=2]
|
|
%exitcond = icmp eq i32 %indvar.next, 42 ; <i1> [#uses=1]
|
|
br i1 %exitcond, label %return, label %somebb
|
|
|
|
somebb:
|
|
br label %bb
|
|
|
|
return: ; preds = %bb16
|
|
ret void
|
|
}
|
|
|
|
declare i32 @bork(...)
|
|
|
|
declare i32 @bar(...)
|
|
|
|
declare i32 @zap(...)
|