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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3896 91177308-0d34-0410-b5e6-96231b3b80d8
71 lines
1.5 KiB
LLVM
71 lines
1.5 KiB
LLVM
; Tests to make sure elimination of casts is working correctly
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; RUN: if as < %s | opt -instcombine -die | dis | grep '%c' | grep cast
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; RUN: then exit 1
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; RUN: else exit 0
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; RUN: fi
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implementation
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int %test1(int %A) {
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%c1 = cast int %A to uint
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%c2 = cast uint %c1 to int
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ret int %c2
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}
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ulong %test2(ubyte %A) {
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%c1 = cast ubyte %A to ushort
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%c2 = cast ushort %c1 to uint
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%Ret = cast uint %c2 to ulong
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ret ulong %Ret
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}
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ulong %test3(ulong %A) { ; This function should just use bitwise AND
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%c1 = cast ulong %A to ubyte
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%c2 = cast ubyte %c1 to ulong
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ret ulong %c2
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}
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uint %test4(int %A, int %B) {
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%COND = setlt int %A, %B
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%c = cast bool %COND to ubyte ; Booleans are unsigned integrals
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%result = cast ubyte %c to uint ; for the cast elim purpose
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ret uint %result
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}
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int %test5(bool %B) {
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%c = cast bool %B to ubyte ; This cast should get folded into
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%result = cast ubyte %c to int ; this cast
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ret int %result
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}
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int %test6(ulong %A) {
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%c1 = cast ulong %A to uint
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%res = cast uint %c1 to int
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ret int %res
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}
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long %test7(bool %A) {
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%c1 = cast bool %A to int
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%res = cast int %c1 to long
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ret long %res
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}
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long %test8(sbyte %A) {
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%c1 = cast sbyte %A to ulong
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%res = cast ulong %c1 to long
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ret long %res
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}
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short %test9(short %A) {
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%c1 = cast short %A to int
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%c2 = cast int %c1 to short
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ret short %c2
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}
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short %test10(short %A) {
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%c1 = cast short %A to uint
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%c2 = cast uint %c1 to short
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ret short %c2
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}
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