llvm-6502/test/CodeGen/PIC16/C16-49.ll

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;RUN: llvm-as < %s | llc -march=pic16
@aa = global i16 55, align 1 ; <i16*> [#uses=1]
@bb = global i16 44, align 1 ; <i16*> [#uses=1]
@PORTD = external global i8 ; <i8*> [#uses=1]
define void @foo() nounwind {
entry:
%tmp = volatile load i16* @aa ; <i16> [#uses=1]
%tmp1 = volatile load i16* @bb ; <i16> [#uses=1]
%sub = sub i16 %tmp, %tmp1 ; <i16> [#uses=1]
%conv = trunc i16 %sub to i8 ; <i8> [#uses=1]
store i8 %conv, i8* @PORTD
ret void
}