llvm-6502/test/Transforms/CorrelatedExprs/2002-10-08-DominatorTest.ll
2006-12-02 04:23:10 +00:00

33 lines
891 B
LLVM

; Test to make sure that SSA is correctly updated
; RUN: llvm-upgrade < %s | llvm-as | opt -cee
;
implementation ; Functions:
int %test(int %A, int %B, bool %c0) {
Start: ; No predecessors!
%c1 = seteq int %A, %B ; <bool> [#uses=1]
br bool %c1, label %Eq, label %Start_crit_edge
Start_crit_edge: ; preds = %Start
br label %Loop
Eq: ; preds = %Start
br label %Loop
Loop: ; preds = %Bottom, %Eq, %Start_crit_edge
%Z = phi int [ %A, %Start_crit_edge ], [ %B, %Eq ], [ %Z, %Bottom ] ; <int> [#uses=2]
%c2 = setge int %A, %B ; <bool> [#uses=1]
br bool %c2, label %Forwarded, label %Loop_crit_edge
Loop_crit_edge: ; preds = %Loop
br label %Bottom
Forwarded: ; preds = %Loop
%Z2 = phi int [ %Z, %Loop ] ; <int> [#uses=1]
call int %test( int 0, int %Z2, bool true ) ; <int>:0 [#uses=0]
br label %Bottom
Bottom: ; preds = %Forwarded, %Loop_crit_edge
br label %Loop
}