xref: /llvm-project/llvm/test/CodeGen/RISCV/pr68855.ll (revision 9122c5235ec85ce0c0ad337e862b006e7b349d84)
153c81a8cSYingwei Zheng; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
253c81a8cSYingwei Zheng; RUN: llc < %s -mtriple=riscv64 | FileCheck %s
353c81a8cSYingwei Zheng
453c81a8cSYingwei Zhengdefine i16 @narrow_load(ptr %p1, ptr %p2) {
553c81a8cSYingwei Zheng; CHECK-LABEL: narrow_load:
653c81a8cSYingwei Zheng; CHECK:       # %bb.0: # %entry
753c81a8cSYingwei Zheng; CHECK-NEXT:    lhu a2, 0(a0)
853c81a8cSYingwei Zheng; CHECK-NEXT:    lui a3, 2
953c81a8cSYingwei Zheng; CHECK-NEXT:    lui a4, 16
10*9122c523SPengcheng Wang; CHECK-NEXT:    addiw a3, a3, -1
1153c81a8cSYingwei Zheng; CHECK-NEXT:    addi a4, a4, -1
12*9122c523SPengcheng Wang; CHECK-NEXT:    xor a2, a2, a3
1353c81a8cSYingwei Zheng; CHECK-NEXT:    xor a4, a3, a4
1453c81a8cSYingwei Zheng; CHECK-NEXT:    or a2, a2, a4
1553c81a8cSYingwei Zheng; CHECK-NEXT:    sw a2, 0(a1)
1653c81a8cSYingwei Zheng; CHECK-NEXT:    lhu a0, 0(a0)
1753c81a8cSYingwei Zheng; CHECK-NEXT:    and a0, a0, a3
1853c81a8cSYingwei Zheng; CHECK-NEXT:    ret
1953c81a8cSYingwei Zhengentry:
2053c81a8cSYingwei Zheng  %bf.load = load i16, ptr %p1, align 2
2153c81a8cSYingwei Zheng  %bf.clear = and i16 %bf.load, 8191
2253c81a8cSYingwei Zheng  %not = xor i16 %bf.clear, -1
2353c81a8cSYingwei Zheng  %conv1 = zext i16 %not to i32
2453c81a8cSYingwei Zheng  store i32 %conv1, ptr %p2, align 4
2553c81a8cSYingwei Zheng  %bf.load2 = load i16, ptr %p1, align 2
2653c81a8cSYingwei Zheng  %bf.clear3 = and i16 %bf.load2, 8191
2753c81a8cSYingwei Zheng  ret i16 %bf.clear3
2853c81a8cSYingwei Zheng}
29