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| author | Chris Lattner <sabre@nondot.org> | 2009-01-09 06:08:12 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-01-09 06:08:12 +0000 |
| commit | 2a99b482a62e3f1ac3fd716fba430ac32fedade4 (patch) | |
| tree | 7f3ce7e038b3926f08c48bcce721c39af9b956c0 /test/Transforms | |
| parent | d62fc8817cc4e7978ed41ba0b7dba85d1805083d (diff) | |
| download | external_llvm-2a99b482a62e3f1ac3fd716fba430ac32fedade4.zip external_llvm-2a99b482a62e3f1ac3fd716fba430ac32fedade4.tar.gz external_llvm-2a99b482a62e3f1ac3fd716fba430ac32fedade4.tar.bz2 | |
Fix PR3298, a crash in Jump Threading. Apparently even
jump threading can have bugs, who knew? ;-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61983 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/JumpThreading/2009-01-08-DeadLoopRepl.ll | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/test/Transforms/JumpThreading/2009-01-08-DeadLoopRepl.ll b/test/Transforms/JumpThreading/2009-01-08-DeadLoopRepl.ll new file mode 100644 index 0000000..6de67eb --- /dev/null +++ b/test/Transforms/JumpThreading/2009-01-08-DeadLoopRepl.ll @@ -0,0 +1,49 @@ +; RUN: llvm-as < %s | opt -jump-threading | llvm-dis +; PR3298 + +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-f80:128:128" +target triple = "i386-apple-darwin9.6" + +define i32 @func(i32 %p_79, i32 %p_80) nounwind { +entry: + br label %bb7 + +bb1: ; preds = %bb2 + br label %bb2 + +bb2: ; preds = %bb7, %bb1 + %l_82.0 = phi i8 [ 0, %bb1 ], [ %l_82.1, %bb7 ] ; <i8> [#uses=3] + br i1 true, label %bb3, label %bb1 + +bb3: ; preds = %bb2 + %0 = icmp eq i32 %p_80_addr.1, 0 ; <i1> [#uses=1] + br i1 %0, label %bb7, label %bb6 + +bb5: ; preds = %bb6 + %1 = icmp eq i8 %l_82.0, 0 ; <i1> [#uses=1] + br i1 %1, label %bb1.i, label %bb.i + +bb.i: ; preds = %bb5 + br label %safe_div_func_char_s_s.exit + +bb1.i: ; preds = %bb5 + br label %safe_div_func_char_s_s.exit + +safe_div_func_char_s_s.exit: ; preds = %bb1.i, %bb.i + br label %bb6 + +bb6: ; preds = %safe_div_func_char_s_s.exit, %bb3 + %p_80_addr.0 = phi i32 [ %p_80_addr.1, %bb3 ], [ 1, %safe_div_func_char_s_s.exit ] ; <i32> [#uses=2] + %2 = icmp eq i32 %p_80_addr.0, 0 ; <i1> [#uses=1] + br i1 %2, label %bb7, label %bb5 + +bb7: ; preds = %bb6, %bb3, %entry + %l_82.1 = phi i8 [ 1, %entry ], [ %l_82.0, %bb3 ], [ %l_82.0, %bb6 ] ; <i8> [#uses=2] + %p_80_addr.1 = phi i32 [ 0, %entry ], [ %p_80_addr.1, %bb3 ], [ %p_80_addr.0, %bb6 ] ; <i32> [#uses=4] + %3 = icmp eq i32 %p_80_addr.1, 0 ; <i1> [#uses=1] + br i1 %3, label %bb8, label %bb2 + +bb8: ; preds = %bb7 + %4 = sext i8 %l_82.1 to i32 ; <i32> [#uses=0] + ret i32 0 +} |