Changes in directory llvm/test/Transforms/InstCombine:
2007-03-25-BadShiftMask.ll added (r1.1) --- Log message: Test case for PR1271: http://llvm.org/PR1271 involving construction of a bad mask to replace a shift instruction. --- Diffs of the changes: (+28 -0) 2007-03-25-BadShiftMask.ll | 28 ++++++++++++++++++++++++++++ 1 files changed, 28 insertions(+) Index: llvm/test/Transforms/InstCombine/2007-03-25-BadShiftMask.ll diff -c /dev/null llvm/test/Transforms/InstCombine/2007-03-25-BadShiftMask.ll:1.1 *** /dev/null Mon Mar 26 00:32:26 2007 --- llvm/test/Transforms/InstCombine/2007-03-25-BadShiftMask.ll Mon Mar 26 00:32:16 2007 *************** *** 0 **** --- 1,28 ---- + ; PR1271 + ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep 'br i1 %1' + %struct..0anon = type { i32, i32 } + %struct..1anon = type { double } + + define i32 @main() { + entry: + %u = alloca %struct..1anon, align 8 ; <%struct..1anon*> [#uses=4] + %tmp1 = getelementptr %struct..1anon* %u, i32 0, i32 0 ; <double*> [#uses=1] + store double 0x7FF0000000000000, double* %tmp1 + %tmp3 = getelementptr %struct..1anon* %u, i32 0, i32 0 ; <double*> [#uses=1] + %tmp34 = bitcast double* %tmp3 to %struct..0anon* ; <%struct..0anon*> [#uses=1] + %tmp5 = getelementptr %struct..0anon* %tmp34, i32 0, i32 1 ; <i32*> [#uses=1] + %tmp6 = load i32* %tmp5 ; <i32> [#uses=1] + %tmp7 = shl i32 %tmp6, 1 ; <i32> [#uses=1] + %tmp8 = lshr i32 %tmp7, 21 ; <i32> [#uses=1] + %tmp89 = trunc i32 %tmp8 to i16 ; <i16> [#uses=1] + icmp ne i16 %tmp89, 2047 ; <i1>:0 [#uses=1] + zext i1 %0 to i8 ; <i8>:1 [#uses=1] + icmp ne i8 %1, 0 ; <i1>:2 [#uses=1] + br i1 %2, label %cond_true, label %cond_false + + cond_true: ; preds = %entry + ret i32 0 + + cond_false: ; preds = %entry + ret i32 1 + } _______________________________________________ llvm-commits mailing list llvm-commits@cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
