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llvm-mirror/test/Transforms/LICM/2003-12-11-SinkingToPHI.ll
Eric Christopher a62270de2c Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00

17 lines
424 B
LLVM

; RUN: opt < %s -licm | lli -force-interpreter
define i32 @main() {
entry:
br label %Loop
Loop: ; preds = %LoopCont, %entry
br i1 true, label %LoopCont, label %Out
LoopCont: ; preds = %Loop
%X = add i32 1, 0 ; <i32> [#uses=1]
br i1 true, label %Out, label %Loop
Out: ; preds = %LoopCont, %Loop
%V = phi i32 [ 2, %Loop ], [ %X, %LoopCont ] ; <i32> [#uses=1]
%V2 = sub i32 %V, 1 ; <i32> [#uses=1]
ret i32 %V2
}