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authorAndrew Trick <atrick@apple.com>2011-07-20 02:08:58 +0000
committerAndrew Trick <atrick@apple.com>2011-07-20 02:08:58 +0000
commitf22d95749a876975329f6de3a233031171af26a6 (patch)
tree5fd4f2f85dbe21f7d853482af0558aff424edee2 /test/Transforms/IndVarSimplify
parente236dc655346bb0ff570c3f1513b4337aed836c4 (diff)
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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.ll35
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 9605670..bb951c6 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
+}