Changes in directory llvm/test/Transforms/InstCombine:
2007-03-27-PR1280.ll added (r1.1) --- Log message: new test case for PR1280: http://llvm.org/PR1280 --- Diffs of the changes: (+15 -0) 2007-03-27-PR1280.ll | 15 +++++++++++++++ 1 files changed, 15 insertions(+) Index: llvm/test/Transforms/InstCombine/2007-03-27-PR1280.ll diff -c /dev/null llvm/test/Transforms/InstCombine/2007-03-27-PR1280.ll:1.1 *** /dev/null Tue Mar 27 20:43:45 2007 --- llvm/test/Transforms/InstCombine/2007-03-27-PR1280.ll Tue Mar 27 20:43:35 2007 *************** *** 0 **** --- 1,15 ---- + ; PR1280 - we should be able to reduce this function to a trunc/sext but it + ; would involve using a bit width (24) that doesn't match a size that + ; the back end can handle. This test makes sure that such a transform + ; is not done. It should be removed when code gen supports "funny" + ; bit widths. + + ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep 'add i49.*-8388608' + + define i49 @test5(i49 %x) { + ;; If we have ADD(XOR(AND(X, 0xFF), 0x80), 0xF..F80), it's a sext. + %X = and i49 %x, 16777215 ; 0x0000000ffffff + %tmp.2 = xor i49 %X, 8388608 ; 0x0000000800000 + %tmp.4 = add i49 %tmp.2, -8388608 ; 0x1FFFFFF800000 + ret i49 %tmp.4 + } _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
