xref: /llvm-project/llvm/test/CodeGen/Hexagon/funnel-shift2.ll (revision a96f691985c8546e826012fdc3481c88f034a194)
1; RUN: llc -mtriple=hexagon < %s | FileCheck %s
2
3; This patch corrects the order of operands in the pattern that lowers funnel
4; shift-left.
5
6; CHECK: r[[R17:[0-9]+]]:[[R16:[0-9]+]] = combine
7; CHECK: call parity
8; CHECK: r[[R1:[0-9]+]]:[[R0:[0-9]+]] = asl(r[[R1]]:[[R0]],#63)
9; CHECK: r[[R1]]:[[R0]] |= lsr(r[[R17]]:[[R16]],#1)
10
11target triple = "hexagon-unknown-unknown-elf"
12
13define dso_local i64 @fshl(i64 %x, i64 %y) {
14entry:
15  %x.addr = alloca i64, align 8
16  %y.addr = alloca i64, align 8
17  store i64 %x, ptr %x.addr, align 8
18  store i64 %y, ptr %y.addr, align 8
19  %0 = load i64, ptr %x.addr, align 8
20  %shr = lshr i64 %0, 1
21  %1 = load i64, ptr %x.addr, align 8
22  %2 = load i64, ptr %y.addr, align 8
23  %call = call i64 @parity(i64 %1, i64 %2)
24  %shl = shl i64 %call, 63
25  %or = or i64 %shr, %shl
26  store i64 %or, ptr %x.addr, align 8
27  %3 = load i64, ptr %x.addr, align 8
28  ret i64 %3
29}
30
31declare dso_local i64 @parity(i64, i64)
32