From b839c05a05f296cece07cc55b6782719a26a6fd4 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sat, 19 Apr 2008 22:32:52 +0000 Subject: rename *.llx -> *.ll, last batch. llvm-svn: 49971 --- llvm/test/Transforms/InstCombine/CPP_min_max.ll | 34 +++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 llvm/test/Transforms/InstCombine/CPP_min_max.ll (limited to 'llvm/test/Transforms/InstCombine/CPP_min_max.ll') diff --git a/llvm/test/Transforms/InstCombine/CPP_min_max.ll b/llvm/test/Transforms/InstCombine/CPP_min_max.ll new file mode 100644 index 00000000000..785b91e79e4 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/CPP_min_max.ll @@ -0,0 +1,34 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | \ +; RUN: grep select | not grep {i32\\*} + +; This testcase corresponds to PR362, which notices that this horrible code +; is generated by the C++ front-end and LLVM optimizers, which has lots of +; loads and other stuff that are unneeded. +; +; Instcombine should propagate the load through the select instructions to +; allow elimination of the extra stuff by the mem2reg pass. + +define void @_Z5test1RiS_(i32* %x, i32* %y) { +entry: + %tmp.1.i = load i32* %y ; [#uses=1] + %tmp.3.i = load i32* %x ; [#uses=1] + %tmp.4.i = icmp slt i32 %tmp.1.i, %tmp.3.i ; [#uses=1] + %retval.i = select i1 %tmp.4.i, i32* %y, i32* %x ; [#uses=1] + %tmp.4 = load i32* %retval.i ; [#uses=1] + store i32 %tmp.4, i32* %x + ret void +} + +define void @_Z5test2RiS_(i32* %x, i32* %y) { +entry: + %tmp.0 = alloca i32 ; [#uses=2] + %tmp.2 = load i32* %x ; [#uses=2] + store i32 %tmp.2, i32* %tmp.0 + %tmp.3.i = load i32* %y ; [#uses=1] + %tmp.4.i = icmp slt i32 %tmp.2, %tmp.3.i ; [#uses=1] + %retval.i = select i1 %tmp.4.i, i32* %y, i32* %tmp.0 ; [#uses=1] + %tmp.6 = load i32* %retval.i ; [#uses=1] + store i32 %tmp.6, i32* %y + ret void +} + -- cgit v1.2.3