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| author | Chris Lattner <sabre@nondot.org> | 2008-06-22 17:46:21 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-06-22 17:46:21 +0000 |
| commit | 0e99e69b2ca8960248acd2a9c556e94fe3ffee84 (patch) | |
| tree | 6ef8e9881a444efb5b28f55b6df2eed615fd9a6d /test/Transforms/ScalarRepl | |
| parent | 4c3885b732d7f8b882813ad8f7f5ce526bda3984 (diff) | |
| download | external_llvm-0e99e69b2ca8960248acd2a9c556e94fe3ffee84.zip external_llvm-0e99e69b2ca8960248acd2a9c556e94fe3ffee84.tar.gz external_llvm-0e99e69b2ca8960248acd2a9c556e94fe3ffee84.tar.bz2 | |
Fix PR2369 by making scalarrepl more careful about promoting
structures. Its default threshold is to promote things that are
smaller than 128 bytes, which is sane. However, it is not sane
to do this for things that turn into 128 *registers*. Add a cap
on the number of registers introduced, defaulting to 128/4=32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52611 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/ScalarRepl')
| -rw-r--r-- | test/Transforms/ScalarRepl/2008-06-22-LargeArray.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/ScalarRepl/2008-06-22-LargeArray.ll b/test/Transforms/ScalarRepl/2008-06-22-LargeArray.ll new file mode 100644 index 0000000..e90dc02 --- /dev/null +++ b/test/Transforms/ScalarRepl/2008-06-22-LargeArray.ll @@ -0,0 +1,18 @@ +; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis | grep {call.*mem} +; PR2369 + +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-darwin8" + +define void @memtest1(i8* %dst, i8* %src) nounwind { +entry: + %temp = alloca [100 x i8] ; <[100 x i8]*> [#uses=2] + %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] + %temp1 = bitcast [100 x i8]* %temp to i8* ; <i8*> [#uses=1] + call void @llvm.memcpy.i32( i8* %temp1, i8* %src, i32 100, i32 1 ) + %temp3 = bitcast [100 x i8]* %temp to i8* ; <i8*> [#uses=1] + call void @llvm.memcpy.i32( i8* %dst, i8* %temp3, i32 100, i32 1 ) + ret void +} + +declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) nounwind |