From 29da20f96cbf593b8418f29cbf53b6edc0326a76 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 14 Dec 2003 04:46:07 +0000 Subject: [PATCH] Testcase for PR179 llvm-svn: 10455 --- .../LICM/2003-12-13-VolatilePromote.ll | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 llvm/test/Regression/Transforms/LICM/2003-12-13-VolatilePromote.ll diff --git a/llvm/test/Regression/Transforms/LICM/2003-12-13-VolatilePromote.ll b/llvm/test/Regression/Transforms/LICM/2003-12-13-VolatilePromote.ll new file mode 100644 index 000000000000..fad03bf75e0f --- /dev/null +++ b/llvm/test/Regression/Transforms/LICM/2003-12-13-VolatilePromote.ll @@ -0,0 +1,17 @@ +; RUN: llvm-as < %s | opt -licm | llvm-dis | grep -C1 volatile | grep Loop + +%X = global int 7 + +void %testfunc(int %i) { + br label %Loop + +Loop: + %x = volatile load int* %X ; Should not promote this to a register + %x2 = add int %x, 1 + store int %x2, int* %X + br bool true, label %Out, label %Loop + +Out: + ret void +} +