llvm-mirror/test/Regression/CodeGen/X86/bswap.ll

; bswap should be constant folded when it is passed a constant argument

; RUN: llvm-as < %s | llc -march=x86 | grep bswapl | wc -l | grep 3 &&
; RUN: llvm-as < %s | llc -march=x86 | grep rolw | wc -l | grep 1

declare ushort %llvm.bswap.i16(ushort)
declare uint %llvm.bswap.i32(uint)
declare ulong %llvm.bswap.i64(ulong)

ushort %W(ushort %A) {
	%Z = call ushort %llvm.bswap.i16(ushort %A)
	ret ushort %Z
}

uint %X(uint %A) {
	%Z = call uint %llvm.bswap.i32(uint %A)
	ret uint %Z
}

ulong %Y(ulong %A) {
	%Z = call ulong %llvm.bswap.i64(ulong %A)
	ret ulong %Z
}