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https://github.com/c64scene-ar/llvm-6502.git
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9aafdcf20d
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
36 lines
742 B
LLVM
36 lines
742 B
LLVM
; This is the test case taken from appel's book that illustrates a hard case
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; that SCCP gets right. BB3 should be completely eliminated.
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;
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; RUN: llvm-upgrade < %s | llvm-as | opt -sccp -constprop -dce -simplifycfg | \
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; RUN: llvm-dis | not grep BB3
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int %testfunction(int %i0, int %j0) {
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BB1:
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br label %BB2
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BB2:
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%j2 = phi int [%j4, %BB7], [1, %BB1]
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%k2 = phi int [%k4, %BB7], [0, %BB1]
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%kcond = setlt int %k2, 100
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br bool %kcond, label %BB3, label %BB4
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BB3:
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%jcond = setlt int %j2, 20
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br bool %jcond, label %BB5, label %BB6
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BB4:
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ret int %j2
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BB5:
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%k3 = add int %k2, 1
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br label %BB7
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BB6:
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%k5 = add int %k2, 1
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br label %BB7
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BB7:
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%j4 = phi int [1, %BB5], [%k2, %BB6]
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%k4 = phi int [%k3, %BB5], [%k5, %BB6]
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br label %BB2
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}
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