llvm-project/llvm/test/Transforms/CondProp/2009-01-25-SingleEntryPHI.ll

38 lines
911 B
LLVM

; RUN: opt < %s -condprop | llvm-dis
; PR3405
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
target triple = "x86_64-unknown-linux-gnu"
define i32 @main(i32 %argc, i8** %argv) nounwind {
entry:
br label %bb2
bb2: ; preds = %bb.bb2_crit_edge, %entry
br i1 false, label %bb5.thread2, label %bb
bb: ; preds = %bb2
br i1 false, label %bb3, label %bb.bb2_crit_edge
bb.bb2_crit_edge: ; preds = %bb
br label %bb2
bb3: ; preds = %bb
%.lcssa4 = phi i1 [ false, %bb ] ; <i1> [#uses=1]
br i1 %.lcssa4, label %bb5.thread, label %bb6
bb5.thread: ; preds = %bb3
br label %bb7
bb7: ; preds = %bb5.thread2, %bb5.thread
br label %UnifiedReturnBlock
bb6: ; preds = %bb3
br label %UnifiedReturnBlock
bb5.thread2: ; preds = %bb2
br label %bb7
UnifiedReturnBlock: ; preds = %bb6, %bb7
ret i32 0
}