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author | Evan Cheng <evan.cheng@apple.com> | 2010-03-17 23:58:35 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2010-03-17 23:58:35 +0000 |
commit | f3caa525cc887b696df8e8a8d9ddb03515d1695a (patch) | |
tree | 30c6e7404069593e30ca58c14d740db12bfd1cc1 /test | |
parent | c3188ce0f1ff2d1b830702a93134905b9719f410 (diff) | |
download | external_llvm-f3caa525cc887b696df8e8a8d9ddb03515d1695a.zip external_llvm-f3caa525cc887b696df8e8a8d9ddb03515d1695a.tar.gz external_llvm-f3caa525cc887b696df8e8a8d9ddb03515d1695a.tar.bz2 |
X86 address mode matching code MatchAddressRecursively does some aggressive hack which require doing a RAUW. It may end up deleting some SDNode up stream. It should avoid referencing deleted nodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98780 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r-- | test/CodeGen/X86/2010-03-17-ISelBug.ll | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2010-03-17-ISelBug.ll b/test/CodeGen/X86/2010-03-17-ISelBug.ll new file mode 100644 index 0000000..609b4e2 --- /dev/null +++ b/test/CodeGen/X86/2010-03-17-ISelBug.ll @@ -0,0 +1,39 @@ +; RUN: llc < %s -mtriple=i386-apple-darwin5 +; rdar://7761790 + +%"struct..0$_485" = type { i16, i16, i32 } +%union.PPToken = type { %"struct..0$_485" } +%struct.PPOperation = type { %union.PPToken, %union.PPToken, [6 x %union.PPToken], i32, i32, i32, [1 x i32], [0 x i8] } + +define i32* @t() align 2 nounwind { +entry: + %operation = alloca %struct.PPOperation, align 8 ; <%struct.PPOperation*> [#uses=2] + %0 = load i32*** null, align 4 ; [#uses=1] + %1 = ptrtoint i32** %0 to i32 ; <i32> [#uses=1] + %2 = sub nsw i32 %1, undef ; <i32> [#uses=2] + br i1 false, label %bb20, label %bb.nph380 + +bb20: ; preds = %entry + ret i32* null + +bb.nph380: ; preds = %entry + %scevgep403 = getelementptr %struct.PPOperation* %operation, i32 0, i32 1, i32 0, i32 2 ; <i32*> [#uses=1] + %3 = ashr i32 %2, 1 ; <i32> [#uses=1] + %tmp405 = and i32 %3, -2 ; <i32> [#uses=1] + %scevgep408 = getelementptr %struct.PPOperation* %operation, i32 0, i32 1, i32 0, i32 1 ; <i16*> [#uses=1] + %tmp410 = and i32 %2, -4 ; <i32> [#uses=1] + br label %bb169 + +bb169: ; preds = %bb169, %bb.nph380 + %index.6379 = phi i32 [ 0, %bb.nph380 ], [ %4, %bb169 ] ; <i32> [#uses=3] + %tmp404 = mul i32 %index.6379, -2 ; <i32> [#uses=1] + %tmp406 = add i32 %tmp405, %tmp404 ; <i32> [#uses=1] + %scevgep407 = getelementptr i32* %scevgep403, i32 %tmp406 ; <i32*> [#uses=1] + %tmp409 = mul i32 %index.6379, -4 ; <i32> [#uses=1] + %tmp411 = add i32 %tmp410, %tmp409 ; <i32> [#uses=1] + %scevgep412 = getelementptr i16* %scevgep408, i32 %tmp411 ; <i16*> [#uses=1] + store i16 undef, i16* %scevgep412, align 2 + store i32 undef, i32* %scevgep407, align 4 + %4 = add nsw i32 %index.6379, 1 ; <i32> [#uses=1] + br label %bb169 +} |