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; The %A getelementptr instruction should be eliminated here
; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | \
; RUN: grep -v %B | not grep getelementptr
; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | grep foo1
; END.
%Global = constant [10 x sbyte] c"helloworld"
implementation
int *%foo1(int* %I) { ; Test noop elimination
%A = getelementptr int* %I, long 0
ret int * %A
}
int* %foo2(int* %I) { ; Test noop elimination
%A = getelementptr int* %I
ret int* %A
}
int* %foo3(int * %I) { ; Test that two array indexing geps fold
%A = getelementptr int* %I, long 17
%B = getelementptr int* %A, long 4
ret int* %B
}
int* %foo4({int} *%I) { ; Test that two getelementptr insts fold
%A = getelementptr {int}* %I, long 1
%B = getelementptr {int}* %A, long 0, uint 0
ret int* %B
}
void %foo5(sbyte %B) {
; This should be turned into a constexpr instead of being an instruction
%A = getelementptr [10 x sbyte]* %Global, long 0, long 4
store sbyte %B, sbyte* %A
ret void
}
int* %foo6() {
%M = malloc [4 x int]
%A = getelementptr [4 x int]* %M, long 0, long 0
%B = getelementptr int* %A, long 2
ret int* %B
}
int* %foo7(int* %I, long %C, long %D) {
%A = getelementptr int* %I, long %C
%B = getelementptr int* %A, long %D
ret int* %B
}
sbyte* %foo8([10 x int]* %X) {
%A = getelementptr [10 x int]* %X, long 0, long 0 ;; Fold into the cast.
%B = cast int* %A to sbyte*
ret sbyte * %B
}
int %test9() {
%A = getelementptr {int, double}* null, int 0, uint 1
%B = cast double* %A to int
ret int %B
}
bool %test10({int, int} * %x, {int, int} * %y) {
%tmp.1 = getelementptr {int,int}* %x, int 0, uint 1
%tmp.3 = getelementptr {int,int}* %y, int 0, uint 1
%tmp.4 = seteq int* %tmp.1, %tmp.3 ;; seteq x, y
ret bool %tmp.4
}
bool %test11({int,int} *%X) {
%P = getelementptr {int,int}* %X, int 0, uint 0
%Q = seteq int* %P, null
ret bool %Q
}
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