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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6966 91177308-0d34-0410-b5e6-96231b3b80d8
54 lines
1.3 KiB
LLVM
54 lines
1.3 KiB
LLVM
; The %A getelementptr instruction should be eliminated here
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; RUN: as < %s | opt -instcombine -die | dis | grep getelementptr | not grep '%A '
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%Global = constant [10 x sbyte] c"helloworld"
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implementation
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int *%foo1(int* %I) { ; Test noop elimination
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%A = getelementptr int* %I, long 0
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ret int * %A
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}
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int* %foo2(int* %I) { ; Test noop elimination
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%A = getelementptr int* %I
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ret int* %A
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}
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int* %foo3(int * %I) { ; Test that two array indexing geps fold
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%A = getelementptr int* %I, long 17
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%B = getelementptr int* %A, long 4
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ret int* %B
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}
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int* %foo4({int} *%I) { ; Test that two getelementptr insts fold
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%A = getelementptr {int}* %I, long 1
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%B = getelementptr {int}* %A, long 0, ubyte 0
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ret int* %B
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}
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sbyte * %foo5() {
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; This should be turned into a constexpr instead of being an instruction
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%A = getelementptr [10 x sbyte]* %Global, long 0, long 4
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ret sbyte* %A
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}
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int* %foo6() {
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%M = malloc [4 x int]
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%A = getelementptr [4 x int]* %M, long 0, long 0
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%B = getelementptr int* %A, long 2
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ret int* %B
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}
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int* %foo7(int* %I, long %C, long %D) {
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%A = getelementptr int* %I, long %C
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%B = getelementptr int* %A, long %D
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ret int* %B
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}
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sbyte* %foo8([10 x int]* %X) {
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%A = getelementptr [10 x int]* %X, long 0, long 0 ;; Fold into the cast.
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%B = cast int* %A to sbyte*
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ret sbyte * %B
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}
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