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| author | Andrew Trick <atrick@apple.com> | 2011-07-20 02:08:58 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-07-20 02:08:58 +0000 |
| commit | f22d95749a876975329f6de3a233031171af26a6 (patch) | |
| tree | 5fd4f2f85dbe21f7d853482af0558aff424edee2 /test/Transforms/IndVarSimplify | |
| parent | e236dc655346bb0ff570c3f1513b4337aed836c4 (diff) | |
| download | llvm-f22d95749a876975329f6de3a233031171af26a6.tar.gz llvm-f22d95749a876975329f6de3a233031171af26a6.tar.bz2 llvm-f22d95749a876975329f6de3a233031171af26a6.tar.xz | |
indvars -disable-iv-rewrite fix: derived GEP IVs
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135558 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/IndVarSimplify')
| -rw-r--r-- | test/Transforms/IndVarSimplify/no-iv-rewrite.ll | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/test/Transforms/IndVarSimplify/no-iv-rewrite.ll b/test/Transforms/IndVarSimplify/no-iv-rewrite.ll index 9605670b86..bb951c6f18 100644 --- a/test/Transforms/IndVarSimplify/no-iv-rewrite.ll +++ b/test/Transforms/IndVarSimplify/no-iv-rewrite.ll @@ -125,9 +125,9 @@ return: ret void } -%struct = type { i32 } +%structI = type { i32 } -define void @bitcastiv(i32 %start, i32 %limit, i32 %step, %struct* %base) +define void @bitcastiv(i32 %start, i32 %limit, i32 %step, %structI* %base) nounwind { entry: @@ -142,12 +142,12 @@ entry: ; CHECK: exit: loop: %iv = phi i32 [%start, %entry], [%next, %loop] - %p = phi %struct* [%base, %entry], [%pinc, %loop] - %adr = getelementptr %struct* %p, i32 0, i32 0 + %p = phi %structI* [%base, %entry], [%pinc, %loop] + %adr = getelementptr %structI* %p, i32 0, i32 0 store i32 3, i32* %adr - %pp = bitcast %struct* %p to i32* + %pp = bitcast %structI* %p to i32* store i32 4, i32* %pp - %pinc = getelementptr %struct* %p, i32 1 + %pinc = getelementptr %structI* %p, i32 1 %next = add i32 %iv, 1 %cond = icmp ne i32 %next, %limit br i1 %cond, label %loop, label %exit @@ -320,3 +320,26 @@ return: %sum4 = add i32 %sum1, %l.next ret i32 %sum4 } + +; Test a GEP IV that is derived from another GEP IV by a nop gep that +; lowers the type without changing the expression. +%structIF = type { i32, float } + +define void @congruentgepiv(%structIF* %base) nounwind uwtable ssp { +entry: + %first = getelementptr inbounds %structIF* %base, i64 0, i32 0 + br label %loop + +loop: + %ptr.iv = phi %structIF* [ %ptr.inc, %latch ], [ %base, %entry ] + %next = phi i32* [ %next.inc, %latch ], [ %first, %entry ] + br i1 undef, label %latch, label %exit + +latch: ; preds = %for.inc50.i + %ptr.inc = getelementptr inbounds %structIF* %ptr.iv, i64 1 + %next.inc = getelementptr inbounds %structIF* %ptr.inc, i64 0, i32 0 + br label %loop + +exit: + ret void +} |