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| author | dim <dim@FreeBSD.org> | 2013-04-08 18:41:23 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2013-04-08 18:41:23 +0000 |
| commit | 169d2bd06003c39970bc94c99669a34b61bb7e45 (patch) | |
| tree | 06099edc18d30894081a822b756f117cbe0b8207 /test/Assembler/ConstantExprNoFold.ll | |
| parent | 0ac5f94c68a3d8fbd1380dbba26d891ea7816b5e (diff) | |
| download | FreeBSD-src-169d2bd06003c39970bc94c99669a34b61bb7e45.zip FreeBSD-src-169d2bd06003c39970bc94c99669a34b61bb7e45.tar.gz | |
Vendor import of llvm trunk r178860:
http://llvm.org/svn/llvm-project/llvm/trunk@178860
Diffstat (limited to 'test/Assembler/ConstantExprNoFold.ll')
| -rw-r--r-- | test/Assembler/ConstantExprNoFold.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/Assembler/ConstantExprNoFold.ll b/test/Assembler/ConstantExprNoFold.ll new file mode 100644 index 0000000..83e8909 --- /dev/null +++ b/test/Assembler/ConstantExprNoFold.ll @@ -0,0 +1,23 @@ +; This test checks to make sure that constant exprs don't fold in some simple +; situations + +; RUN: llvm-as < %s | llvm-dis | FileCheck %s + +; Even give it a datalayout, to tempt folding as much as possible. +target datalayout = "p:32:32" + +@A = global i64 0 +@B = global i64 0 + +; Don't fold this. @A might really be allocated next to @B, in which case the +; icmp should return true. It's not valid to *dereference* in @B from a pointer +; based on @A, but icmp isn't a dereference. + +; CHECK: @C = global i1 icmp eq (i64* getelementptr inbounds (i64* @A, i64 1), i64* @B) +@C = global i1 icmp eq (i64* getelementptr inbounds (i64* @A, i64 1), i64* @B) + +; Don't fold this completely away either. In theory this could be simplified +; to only use a gep on one side of the icmp though. + +; CHECK: @D = global i1 icmp eq (i64* getelementptr inbounds (i64* @A, i64 1), i64* getelementptr inbounds (i64* @B, i64 2)) +@D = global i1 icmp eq (i64* getelementptr inbounds (i64* @A, i64 1), i64* getelementptr inbounds (i64* @B, i64 2)) |
