From 2b5d75c35b8f62d67bd8029ea2ca2862b0757475 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 4 Feb 2007 20:15:15 +0000 Subject: new testcase for x86 backend miscompilation git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33883 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/X86/2007-02-04-OrAddrMode.ll | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 test/CodeGen/X86/2007-02-04-OrAddrMode.ll (limited to 'test/CodeGen/X86/2007-02-04-OrAddrMode.ll') diff --git a/test/CodeGen/X86/2007-02-04-OrAddrMode.ll b/test/CodeGen/X86/2007-02-04-OrAddrMode.ll new file mode 100644 index 0000000000..b6311d11e8 --- /dev/null +++ b/test/CodeGen/X86/2007-02-04-OrAddrMode.ll @@ -0,0 +1,21 @@ +; RUN: llvm-as < %s | llc -march=x86 | grep 'orl $1, %eax' && +; RUN: llvm-as < %s | llc -march=x86 | grep 'leal 3(,%eax,8)' + +;; This example can't fold the or into an LEA. +define i32 @test(float ** %tmp2, i32 %tmp12) { + %tmp3 = load float** %tmp2 + %tmp132 = shl i32 %tmp12, 2 ; [#uses=1] + %tmp3 = bitcast float* %tmp3 to i8* ; [#uses=1] + %ctg2 = getelementptr i8* %tmp3, i32 %tmp132 ; [#uses=1] + %tmp6 = ptrtoint i8* %ctg2 to i32 ; [#uses=1] + %tmp14 = or i32 %tmp6, 1 ; [#uses=1] + ret i32 %tmp14 +} + + +;; This can! +define i32 @test2(i32 %a, i32 %b) { + %c = shl i32 %a, 3 + %d = or i32 %c, 3 + ret i32 %d +} -- cgit v1.2.3