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f9967959be
involving %B instead of allowing any geps except %A's. llvm-svn: 17065
61 lines
1.4 KiB
LLVM
61 lines
1.4 KiB
LLVM
; The %A getelementptr instruction should be eliminated here
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep -v '%B' | not grep getelementptr
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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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void %foo5(sbyte %B) {
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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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store sbyte %B, sbyte* %A
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ret void
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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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int %test9() {
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%A = getelementptr {int, double}* null, int 0, uint 1
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%B = cast double* %A to int
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ret int %B
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}
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