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; This test makes sure that mul instructions are properly eliminated.
;
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep mul
implementation
int %test1(int %A) {
%B = mul int %A, 1
ret int %B
}
int %test2(int %A) {
%B = mul int %A, 2 ; Should convert to an add instruction
ret int %B
}
int %test3(int %A) {
%B = mul int %A, 0 ; This should disappear entirely
ret int %B
}
double %test4(double %A) {
%B = mul double 1.0, %A ; This is safe for FP
ret double %B
}
int %test5(int %A) {
%B = mul int %A, 8
ret int %B
}
ubyte %test6(ubyte %A) {
%B = mul ubyte %A, 8
%C = mul ubyte %B, 8
ret ubyte %C
}
int %test7(int %i) {
%tmp = mul int %i, -1 ; %tmp = sub 0, %i
ret int %tmp
}
ulong %test8(ulong %i) {
%j = mul ulong %i, 18446744073709551615 ; tmp = sub 0, %i
ret ulong %j
}
uint %test9(uint %i) {
%j = mul uint %i, 4294967295 ; %j = sub 0, %i
ret uint %j
}
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