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| author | Dan Gohman <gohman@apple.com> | 2010-07-15 23:38:13 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-07-15 23:38:13 +0000 |
| commit | bb5d92741b2835eff25e4524bc6a5b0fb4fda855 (patch) | |
| tree | d8f7a04a866ce14c5e266bc3285a65dd805b144a /test/Transforms | |
| parent | e9bf7e692e56656ef13b33af86624d0fdcd578fb (diff) | |
| download | llvm-bb5d92741b2835eff25e4524bc6a5b0fb4fda855.tar.gz llvm-bb5d92741b2835eff25e4524bc6a5b0fb4fda855.tar.bz2 llvm-bb5d92741b2835eff25e4524bc6a5b0fb4fda855.tar.xz | |
Fix the order that SCEVExpander considers add operands in so that
it doesn't miss an opportunity to form a GEP, regardless of the
relative loop depths of the operands. This fixes rdar://8197217.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108475 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/IndVarSimplify/uglygep.ll | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/test/Transforms/IndVarSimplify/uglygep.ll b/test/Transforms/IndVarSimplify/uglygep.ll new file mode 100644 index 0000000000..469b7c0ffd --- /dev/null +++ b/test/Transforms/IndVarSimplify/uglygep.ll @@ -0,0 +1,40 @@ +; RUN: opt -indvars -S | not grep uglygep +; rdar://8197217 + +; Indvars should be able to emit a clean GEP here, not an uglygep. + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" +target triple = "x86_64-apple-darwin11.0" + +@numf2s = external global i32 ; <i32*> [#uses=1] +@numf1s = external global i32 ; <i32*> [#uses=1] +@tds = external global double** ; <double***> [#uses=1] + +define void @init_td(i32 %tmp7) nounwind { +entry: + br label %bb4 + +bb4: ; preds = %bb3, %entry + %i.0 = phi i32 [ 0, %entry ], [ %tmp9, %bb3 ] ; <i32> [#uses=3] + br label %bb + +bb: ; preds = %bb4 + br label %bb2 + +bb2: ; preds = %bb1, %bb + %j.0 = phi i32 [ 0, %bb ], [ %tmp6, %bb1 ] ; <i32> [#uses=3] + %tmp8 = icmp slt i32 %j.0, %tmp7 ; <i1> [#uses=1] + br i1 %tmp8, label %bb1, label %bb3 + +bb1: ; preds = %bb2 + %tmp = load double*** @tds, align 8 ; <double**> [#uses=1] + %tmp1 = sext i32 %i.0 to i64 ; <i64> [#uses=1] + %tmp2 = getelementptr inbounds double** %tmp, i64 %tmp1 ; <double**> [#uses=1] + %tmp3 = load double** %tmp2, align 1 ; <double*> [#uses=1] + %tmp6 = add nsw i32 %j.0, 1 ; <i32> [#uses=1] + br label %bb2 + +bb3: ; preds = %bb2 + %tmp9 = add nsw i32 %i.0, 1 ; <i32> [#uses=1] + br label %bb4 +} |