llvm-6502/test/Transforms/SimplifyCFG/PhiBlockMerge.ll
Reid Spencer 9aafdcf20d For PR1319:
Upgrade to use new Tcl exec based test harness. This exposes 3 bugs that
were previously not being reported:
test/Transforms/GlobalDCE/2002-08-17-FunctionDGE.ll
test/Transforms/GlobalOpt/memset.ll
test/Transforms/IndVarsSimplify/exit_value_tests.llx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36065 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-15 09:21:47 +00:00

24 lines
423 B
LLVM

; Test merging of blocks that only have PHI nodes in them
;
; RUN: llvm-upgrade < %s | llvm-as | opt -simplifycfg | llvm-dis | not grep N:
;
int %test(bool %a, bool %b) {
br bool %a, label %M, label %O
O:
br bool %b, label %N, label %Q
Q:
br label %N
N:
%Wp = phi int [0, %O], [1, %Q]
; This block should be foldable into M
br label %M
M:
%W = phi int [%Wp, %N], [2, %0]
%R = add int %W, 1
ret int %R
}