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author | Dan Gohman <gohman@apple.com> | 2010-04-08 05:57:57 +0000 |
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committer | Dan Gohman <gohman@apple.com> | 2010-04-08 05:57:57 +0000 |
commit | 701a4aef7fa0ece4dc1fdbc88b981820564cb4e4 (patch) | |
tree | 42e8019595b982abefb76583f62dfa37bda9cbab /test | |
parent | 4038f9c21b17378617c25f3092fe615326f8b874 (diff) | |
download | external_llvm-701a4aef7fa0ece4dc1fdbc88b981820564cb4e4.zip external_llvm-701a4aef7fa0ece4dc1fdbc88b981820564cb4e4.tar.gz external_llvm-701a4aef7fa0ece4dc1fdbc88b981820564cb4e4.tar.bz2 |
When expanding expressions which are using post-inc mode for multiple loops,
ensure that the expansion is dominated by the increments of those loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100748 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r-- | test/CodeGen/X86/multiple-loop-post-inc.ll | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/test/CodeGen/X86/multiple-loop-post-inc.ll b/test/CodeGen/X86/multiple-loop-post-inc.ll index 5feab18..51a0611 100644 --- a/test/CodeGen/X86/multiple-loop-post-inc.ll +++ b/test/CodeGen/X86/multiple-loop-post-inc.ll @@ -275,3 +275,30 @@ bb14: ; preds = %bb12, %bb11 return: ; preds = %entry ret void } + +; Codegen shouldn't crash on this testcase. + +define void @bar(i32 %a, i32 %b) nounwind { +entry: ; preds = %bb1, %entry, %for.end204 + br label %outer + +outer: ; preds = %bb1, %entry + %i6 = phi i32 [ %storemerge171, %bb1 ], [ %a, %entry ] ; <i32> [#uses=2] + %storemerge171 = add i32 %i6, 1 ; <i32> [#uses=1] + br label %inner + +inner: ; preds = %bb0, %if.end275 + %i8 = phi i32 [ %a, %outer ], [ %indvar.next159, %bb0 ] ; <i32> [#uses=2] + %t338 = load i32* undef ; <i32> [#uses=1] + %t191 = mul i32 %i8, %t338 ; <i32> [#uses=1] + %t179 = add i32 %i6, %t191 ; <i32> [#uses=1] + br label %bb0 + +bb0: ; preds = %for.body332 + %indvar.next159 = add i32 %i8, 1 ; <i32> [#uses=1] + br i1 undef, label %bb1, label %inner + +bb1: ; preds = %bb0, %outer + %midx.4 = phi i32 [ %t179, %bb0 ] ; <i32> [#uses=0] + br label %outer +} |