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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2013-03-30 21:28:18 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2013-03-30 21:28:18 +0000 |
| commit | 0b68b758bbb6718fc67423109eeb9df64c711a37 (patch) | |
| tree | e4755a5946ffdba795e72075abdf24a8a484f1dc /test/CodeGen/X86/2013-01-09-DAGCombineBug.ll | |
| parent | 531ebc8a3cf0fdc5c30d072ab356283ce8dd145f (diff) | |
DAGCombine: visitXOR can replace a node without returning it, bail out in that case.
Fixes the crash reported in PR15608.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178429 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2013-01-09-DAGCombineBug.ll')
| -rw-r--r-- | test/CodeGen/X86/2013-01-09-DAGCombineBug.ll | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2013-01-09-DAGCombineBug.ll b/test/CodeGen/X86/2013-01-09-DAGCombineBug.ll index db7ec8ae26..1b417e54a2 100644 --- a/test/CodeGen/X86/2013-01-09-DAGCombineBug.ll +++ b/test/CodeGen/X86/2013-01-09-DAGCombineBug.ll @@ -39,3 +39,36 @@ define void @t() nounwind uwtable ssp { ; <label>:11 ; preds = %11, %4 br label %11 } + +; PR15608 +@global = external constant [2 x i8] + +define void @PR15608() { +bb: + br label %bb3 + +bb1: ; No predecessors! + br i1 icmp ult (i64 xor (i64 zext (i1 trunc (i192 lshr (i192 or (i192 shl (i192 zext (i64 trunc (i128 lshr (i128 trunc (i384 lshr (i384 or (i384 shl (i384 zext (i64 ptrtoint ([2 x i8]* @global to i64) to i384), i384 192), i384 425269881901436522087161771558896140289), i384 128) to i128), i128 64) to i64) to i192), i192 64), i192 1), i192 128) to i1) to i64), i64 1), i64 1), label %bb2, label %bb3 + +bb2: ; preds = %bb1 + unreachable + +bb3: ; preds = %bb1, %bb + br i1 xor (i1 trunc (i192 lshr (i192 or (i192 shl (i192 zext (i64 trunc (i128 lshr (i128 trunc (i384 lshr (i384 or (i384 shl (i384 zext (i64 ptrtoint ([2 x i8]* @global to i64) to i384), i384 192), i384 425269881901436522087161771558896140289), i384 128) to i128), i128 64) to i64) to i192), i192 64), i192 1), i192 128) to i1), i1 trunc (i192 lshr (i192 or (i192 and (i192 or (i192 shl (i192 zext (i64 trunc (i128 lshr (i128 trunc (i384 lshr (i384 or (i384 shl (i384 zext (i64 ptrtoint ([2 x i8]* @global to i64) to i384), i384 192), i384 425269881901436522087161771558896140289), i384 128) to i128), i128 64) to i64) to i192), i192 64), i192 1), i192 -340282366920938463463374607431768211457), i192 shl (i192 zext (i1 trunc (i192 lshr (i192 or (i192 shl (i192 zext (i64 trunc (i128 lshr (i128 trunc (i384 lshr (i384 or (i384 shl (i384 zext (i64 ptrtoint ([2 x i8]* @global to i64) to i384), i384 192), i384 425269881901436522087161771558896140289), i384 128) to i128), i128 64) to i64) to i192), i192 64), i192 1), i192 128) to i1) to i192), i192 128)), i192 128) to i1)), label %bb7, label %bb4 + +bb4: ; preds = %bb6, %bb3 + %tmp = phi i1 [ true, %bb6 ], [ trunc (i192 lshr (i192 or (i192 and (i192 or (i192 shl (i192 zext (i64 trunc (i128 lshr (i128 trunc (i384 lshr (i384 or (i384 shl (i384 zext (i64 ptrtoint ([2 x i8]* @global to i64) to i384), i384 192), i384 425269881901436522087161771558896140289), i384 128) to i128), i128 64) to i64) to i192), i192 64), i192 1), i192 -340282366920938463463374607431768211457), i192 shl (i192 zext (i1 trunc (i192 lshr (i192 or (i192 shl (i192 zext (i64 trunc (i128 lshr (i128 trunc (i384 lshr (i384 or (i384 shl (i384 zext (i64 ptrtoint ([2 x i8]* @global to i64) to i384), i384 192), i384 425269881901436522087161771558896140289), i384 128) to i128), i128 64) to i64) to i192), i192 64), i192 1), i192 128) to i1) to i192), i192 128)), i192 128) to i1), %bb3 ] + br i1 false, label %bb8, label %bb5 + +bb5: ; preds = %bb4 + br i1 %tmp, label %bb8, label %bb6 + +bb6: ; preds = %bb5 + br i1 false, label %bb8, label %bb4 + +bb7: ; preds = %bb3 + unreachable + +bb8: ; preds = %bb6, %bb5, %bb4 + unreachable +} |