From 4323665bd857c0527b50463d415d9e76493ad2fe Mon Sep 17 00:00:00 2001 From: Jan Wen Voung Date: Tue, 12 Mar 2013 16:27:52 +0000 Subject: Revert the test moves from 176733. Use "REQUIRES: asserts" instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176873 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/TailCallElim/dup_tail.ll | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 test/Transforms/TailCallElim/dup_tail.ll (limited to 'test/Transforms/TailCallElim/dup_tail.ll') diff --git a/test/Transforms/TailCallElim/dup_tail.ll b/test/Transforms/TailCallElim/dup_tail.ll new file mode 100644 index 0000000..f5b87f2 --- /dev/null +++ b/test/Transforms/TailCallElim/dup_tail.ll @@ -0,0 +1,26 @@ +; REQUIRES: asserts +; Duplicate the return into if.end to enable TCE. +; RUN: opt -tailcallelim -stats -disable-output < %s 2>&1 | FileCheck %s + +; CHECK: Number of return duplicated + +define i32 @fib(i32 %n) nounwind ssp { +entry: + %cmp = icmp slt i32 %n, 2 + br i1 %cmp, label %if.then, label %if.end + +if.then: ; preds = %entry + br label %return + +if.end: ; preds = %entry + %sub = add nsw i32 %n, -2 + %call = call i32 @fib(i32 %sub) + %sub3 = add nsw i32 %n, -1 + %call4 = call i32 @fib(i32 %sub3) + %add = add nsw i32 %call, %call4 + br label %return + +return: ; preds = %if.end, %if.then + %retval.0 = phi i32 [ 1, %if.then ], [ %add, %if.end ] + ret i32 %retval.0 +} -- cgit v1.1