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efd74a0159
to run the die pass after it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11942 91177308-0d34-0410-b5e6-96231b3b80d8
102 lines
2.1 KiB
LLVM
102 lines
2.1 KiB
LLVM
; Tests to make sure elimination of casts is working correctly
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep '%c' | not grep cast
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%inbuf = external global [32832 x ubyte]
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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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declare void %varargs(int, ...)
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void %test11(int* %P) {
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%c = cast int* %P to short*
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call void(int, ...)* %varargs(int 5, short* %c)
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ret void
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}
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int* %test12() {
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%p = malloc [4 x sbyte]
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%c = cast [4 x sbyte]* %p to int*
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ret int* %c
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}
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ubyte *%test13(long %A) {
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%c = getelementptr [0 x ubyte]* cast ([32832 x ubyte]* %inbuf to [0 x ubyte]*), long 0, long %A
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ret ubyte* %c
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}
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bool %test14(sbyte %A) {
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%B = cast sbyte %A to ubyte
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%X = setlt ubyte %B, 128 ; setge %A, 0
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ret bool %X
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}
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bool %test15(ubyte %A) {
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%B = cast ubyte %A to sbyte
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%X = setlt sbyte %B, 0 ; setgt %A, 127
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ret bool %X
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}
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