From a75342d89f59426934ed634a15c6585197ff55cc Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 4 Aug 2005 22:49:32 +0000 Subject: add a testcase nate requested llvm-svn: 22663 --- .../Regression/Transforms/CondProp/phisimplify.ll | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 llvm/test/Regression/Transforms/CondProp/phisimplify.ll (limited to 'llvm/test/Regression/Transforms') diff --git a/llvm/test/Regression/Transforms/CondProp/phisimplify.ll b/llvm/test/Regression/Transforms/CondProp/phisimplify.ll new file mode 100644 index 00000000000..818bcab40d2 --- /dev/null +++ b/llvm/test/Regression/Transforms/CondProp/phisimplify.ll @@ -0,0 +1,33 @@ +; RUN: llvm-as < %s | opt -condprop | llvm-dis | not grep phi + +int %test(uint %C, bool %Val) { + switch uint %C, label %T1 [ + uint 4, label %T2 + uint 17, label %T3 + ] +T1: + call void %a() + br label %Cont +T2: + call void %b() + br label %Cont +T3: + call void %c() + br label %Cont + +Cont: + ;; PHI becomes dead after threading T2 + %C2 = phi bool [%Val, %T1], [true, %T2], [%Val, %T3] + br bool %C2, label %L2, label %F2 +L2: + call void %d() + ret int 17 +F2: + call void %e() + ret int 1 +} +declare void %a() +declare void %b() +declare void %c() +declare void %d() +declare void %e() -- cgit v1.2.3