From d38cdb020ec534417e644a0962b7668525e7f658 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sat, 27 Feb 2010 00:07:42 +0000 Subject: fix PR6414, a nondeterminism issue in IPSCCP which was because of a subtle interation in a loop operating in densemap order. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97288 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/SCCP/retvalue-undef.ll | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 test/Transforms/SCCP/retvalue-undef.ll (limited to 'test/Transforms') diff --git a/test/Transforms/SCCP/retvalue-undef.ll b/test/Transforms/SCCP/retvalue-undef.ll new file mode 100644 index 0000000..389561f --- /dev/null +++ b/test/Transforms/SCCP/retvalue-undef.ll @@ -0,0 +1,32 @@ +; RUN: opt -ipsccp -S %s | FileCheck %s +; PR6414 +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" +target triple = "x86_64-unknown-linux-gnu" + +define internal i32 ()* @f() { + ret i32 ()* @g +} + +define internal i32 @g() { + ret i32 8 +} + +; CHECK: internal i32 @g() +; CHECK-NEXT: ret i32 8 + +define internal void @outer_mod() { + %1 = call i32 ()* ()* @f() ; [#uses=1] + %2 = call i32 %1() ; [#uses=0] + ret void +} + +define internal void @module_init() { + call void @register_outer_mod(void ()* @outer_mod) + ret void +} + +declare void @register_outer_mod(void ()*) + +define i32 @main() { + ret i32 0 +} -- cgit v1.1