xref: /llvm-project/llvm/test/CodeGen/RISCV/pr68855.ll (revision 9122c5235ec85ce0c0ad337e862b006e7b349d84)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
2; RUN: llc < %s -mtriple=riscv64 | FileCheck %s
3
4define i16 @narrow_load(ptr %p1, ptr %p2) {
5; CHECK-LABEL: narrow_load:
6; CHECK:       # %bb.0: # %entry
7; CHECK-NEXT:    lhu a2, 0(a0)
8; CHECK-NEXT:    lui a3, 2
9; CHECK-NEXT:    lui a4, 16
10; CHECK-NEXT:    addiw a3, a3, -1
11; CHECK-NEXT:    addi a4, a4, -1
12; CHECK-NEXT:    xor a2, a2, a3
13; CHECK-NEXT:    xor a4, a3, a4
14; CHECK-NEXT:    or a2, a2, a4
15; CHECK-NEXT:    sw a2, 0(a1)
16; CHECK-NEXT:    lhu a0, 0(a0)
17; CHECK-NEXT:    and a0, a0, a3
18; CHECK-NEXT:    ret
19entry:
20  %bf.load = load i16, ptr %p1, align 2
21  %bf.clear = and i16 %bf.load, 8191
22  %not = xor i16 %bf.clear, -1
23  %conv1 = zext i16 %not to i32
24  store i32 %conv1, ptr %p2, align 4
25  %bf.load2 = load i16, ptr %p1, align 2
26  %bf.clear3 = and i16 %bf.load2, 8191
27  ret i16 %bf.clear3
28}
29