llvm/test/Transforms/LoopStrengthReduce/phi_node_update_multiple_preds.ll
Tanya Lattner e6d5d39c07 Upgrade tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48538 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-19 07:28:33 +00:00

29 lines
1.1 KiB
LLVM

; RUN: llvm-as < %s | opt -loop-reduce -disable-output
; LSR should not crash on this.
define fastcc void @loadloop() {
entry:
switch i8 0, label %shortcirc_next [
i8 32, label %loopexit.2
i8 59, label %loopexit.2
]
shortcirc_next: ; preds = %no_exit.2, %entry
%indvar37 = phi i32 [ 0, %entry ], [ %indvar.next38, %no_exit.2 ] ; <i32> [#uses=3]
%gep.upgrd.1 = zext i32 %indvar37 to i64 ; <i64> [#uses=1]
%wp.2.4 = getelementptr i8* null, i64 %gep.upgrd.1 ; <i8*> [#uses=1]
br i1 false, label %loopexit.2, label %no_exit.2
no_exit.2: ; preds = %shortcirc_next
%wp.2.4.rec = bitcast i32 %indvar37 to i32 ; <i32> [#uses=1]
%inc.1.rec = add i32 %wp.2.4.rec, 1 ; <i32> [#uses=1]
%inc.1 = getelementptr i8* null, i32 %inc.1.rec ; <i8*> [#uses=2]
%indvar.next38 = add i32 %indvar37, 1 ; <i32> [#uses=1]
switch i8 0, label %shortcirc_next [
i8 32, label %loopexit.2
i8 59, label %loopexit.2
]
loopexit.2: ; preds = %no_exit.2, %no_exit.2, %shortcirc_next, %entry, %entry
%wp.2.7 = phi i8* [ null, %entry ], [ null, %entry ], [ %wp.2.4, %shortcirc_next ], [ %inc.1, %no_exit.2 ], [ %inc.1, %no_exit.2 ] ; <i8*> [#uses=0]
ret void
}