From bbc33853a5b0a84e2f45d74b5549eee4d87d0e42 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Mon, 5 Oct 2009 02:47:47 +0000 Subject: instcombine shouldn't delete all null checks for mallocs. This fixes PR5130. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83290 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/InstCombine/badmalloc.ll | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 test/Transforms/InstCombine/badmalloc.ll (limited to 'test/Transforms') diff --git a/test/Transforms/InstCombine/badmalloc.ll b/test/Transforms/InstCombine/badmalloc.ll new file mode 100644 index 0000000..cab23b5 --- /dev/null +++ b/test/Transforms/InstCombine/badmalloc.ll @@ -0,0 +1,19 @@ +; RUN: opt < %s -instcombine -S | FileCheck %s + +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-apple-darwin10.0" + +declare noalias i8* @malloc(i64) nounwind +declare void @free(i8*) + +; PR5130 +define i1 @test1() { + %A = call noalias i8* @malloc(i64 4) nounwind + %B = icmp eq i8* %A, null + + call void @free(i8* %A) + ret i1 %B + +; CHECK: @test1 +; CHECK: ret i1 %B +} -- cgit v1.1