File: i128-addsub.ll

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llvm-toolchain-19 1%3A19.1.7-3~deb12u1
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; RUN: llc < %s

define void @test_add(i64 %AL, i64 %AH, i64 %BL, i64 %BH, ptr %RL, ptr %RH) {
entry:
	%tmp1 = zext i64 %AL to i128		; <i128> [#uses=1]
	%tmp23 = zext i64 %AH to i128		; <i128> [#uses=1]
	%tmp4 = shl i128 %tmp23, 64		; <i128> [#uses=1]
	%tmp5 = or i128 %tmp4, %tmp1		; <i128> [#uses=1]
	%tmp67 = zext i64 %BL to i128		; <i128> [#uses=1]
	%tmp89 = zext i64 %BH to i128		; <i128> [#uses=1]
	%tmp11 = shl i128 %tmp89, 64		; <i128> [#uses=1]
	%tmp12 = or i128 %tmp11, %tmp67		; <i128> [#uses=1]
	%tmp15 = add i128 %tmp12, %tmp5		; <i128> [#uses=2]
	%tmp1617 = trunc i128 %tmp15 to i64		; <i64> [#uses=1]
	store i64 %tmp1617, ptr %RL
	%tmp21 = lshr i128 %tmp15, 64		; <i128> [#uses=1]
	%tmp2122 = trunc i128 %tmp21 to i64		; <i64> [#uses=1]
	store i64 %tmp2122, ptr %RH
	ret void
}

define void @test_sub(i64 %AL, i64 %AH, i64 %BL, i64 %BH, ptr %RL, ptr %RH) {
entry:
	%tmp1 = zext i64 %AL to i128		; <i128> [#uses=1]
	%tmp23 = zext i64 %AH to i128		; <i128> [#uses=1]
	%tmp4 = shl i128 %tmp23, 64		; <i128> [#uses=1]
	%tmp5 = or i128 %tmp4, %tmp1		; <i128> [#uses=1]
	%tmp67 = zext i64 %BL to i128		; <i128> [#uses=1]
	%tmp89 = zext i64 %BH to i128		; <i128> [#uses=1]
	%tmp11 = shl i128 %tmp89, 64		; <i128> [#uses=1]
	%tmp12 = or i128 %tmp11, %tmp67		; <i128> [#uses=1]
	%tmp15 = sub i128 %tmp5, %tmp12		; <i128> [#uses=2]
	%tmp1617 = trunc i128 %tmp15 to i64		; <i64> [#uses=1]
	store i64 %tmp1617, ptr %RL
	%tmp21 = lshr i128 %tmp15, 64		; <i128> [#uses=1]
	%tmp2122 = trunc i128 %tmp21 to i64		; <i64> [#uses=1]
	store i64 %tmp2122, ptr %RH
	ret void
}