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author | Chris Lattner <sabre@nondot.org> | 2009-07-13 17:14:23 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2009-07-13 17:14:23 +0000 |
commit | 6fbc1969e94cb00c82ab84e1dfe243e7388d3b1b (patch) | |
tree | 5e0e8e98cc6711b7ff2ece8e0727f1b9a622f9e9 /test | |
parent | 191cf2851b40fea6b7d927d5de8f22c35dd33828 (diff) | |
download | external_llvm-6fbc1969e94cb00c82ab84e1dfe243e7388d3b1b.zip external_llvm-6fbc1969e94cb00c82ab84e1dfe243e7388d3b1b.tar.gz external_llvm-6fbc1969e94cb00c82ab84e1dfe243e7388d3b1b.tar.bz2 |
Move the re-sort of invalidated NonLocalPointerDeps cache earlier
so that all code paths get it. PR4256 was about a case where the
phi translation loop would find all preds in the Visited cache, so
it could get by without re-sorting the NonLocalPointerDeps cache.
Fix this by resorting it earlier, there is no reason not to do this.
This patch inspired by Jakub Staszak's patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75476 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r-- | test/Transforms/GVN/2009-07-13-MemDepSortFail.ll | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/test/Transforms/GVN/2009-07-13-MemDepSortFail.ll b/test/Transforms/GVN/2009-07-13-MemDepSortFail.ll new file mode 100644 index 0000000..f873704 --- /dev/null +++ b/test/Transforms/GVN/2009-07-13-MemDepSortFail.ll @@ -0,0 +1,67 @@ +; RUN: llvm-as < %s | opt -gvn | llvm-dis +; PR4256 +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32" +target triple = "i386-linux-gnu" + %llvm.dbg.anchor.type = type { i32, i32 } + %struct.cset = type { i8*, i8, i8, i32, i8* } + %struct.lmat = type { %struct.re_guts*, i32, %llvm.dbg.anchor.type*, i8*, i8*, i8*, i8*, i8**, i32, i8*, i8*, i8*, i8*, i8* } + %struct.re_guts = type { i32*, %struct.cset*, i8*, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i8*, i8*, i32, i32, i32, i32, [1 x i8] } + +define i8* @lbackref(%struct.lmat* %m, i8* %start, i8* %stop, i32 %startst, i32 %stopst, i32 %lev, i32 %rec) nounwind { +entry: + br label %bb63 + +bb: ; preds = %bb63 + switch i32 0, label %bb62 [ + i32 268435456, label %bb2 + i32 805306368, label %bb9 + i32 -1610612736, label %bb51 + ] + +bb2: ; preds = %bb + br label %bb62 + +bb9: ; preds = %bb + %0 = load i8* %sp.1, align 1 ; <i8> [#uses=0] + br label %bb62 + +bb51: ; preds = %bb + %1 = load i8* %sp.1, align 1 ; <i8> [#uses=0] + ret i8* null + +bb62: ; preds = %bb9, %bb2, %bb + br label %bb63 + +bb63: ; preds = %bb84, %bb69, %bb62, %entry + %sp.1 = phi i8* [ null, %bb62 ], [ %sp.1.lcssa, %bb84 ], [ %start, %entry ], [ %sp.1.lcssa, %bb69 ] ; <i8*> [#uses=3] + br i1 false, label %bb, label %bb65 + +bb65: ; preds = %bb63 + %sp.1.lcssa = phi i8* [ %sp.1, %bb63 ] ; <i8*> [#uses=4] + br i1 false, label %bb66, label %bb69 + +bb66: ; preds = %bb65 + ret i8* null + +bb69: ; preds = %bb65 + switch i32 0, label %bb108.loopexit2.loopexit.loopexit [ + i32 1342177280, label %bb63 + i32 1476395008, label %bb84 + i32 1879048192, label %bb104 + i32 2013265920, label %bb93 + ] + +bb84: ; preds = %bb69 + %2 = tail call i8* @lbackref(%struct.lmat* %m, i8* %sp.1.lcssa, i8* %stop, i32 0, i32 %stopst, i32 0, i32 0) nounwind ; <i8*> [#uses=0] + br label %bb63 + +bb93: ; preds = %bb69 + ret i8* null + +bb104: ; preds = %bb69 + %sp.1.lcssa.lcssa33 = phi i8* [ %sp.1.lcssa, %bb69 ] ; <i8*> [#uses=0] + unreachable + +bb108.loopexit2.loopexit.loopexit: ; preds = %bb69 + ret i8* null +} |