1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s \
3 ; RUN: | FileCheck %s -check-prefix=RV32I
5 ; TODO: lbu and lhu should be selected to avoid the unnecessary masking.
7 @bytes = global [5 x i8] zeroinitializer, align 1
9 define i32 @test_zext_i8() nounwind {
10 ; RV32I-LABEL: test_zext_i8:
11 ; RV32I: # %bb.0: # %entry
12 ; RV32I-NEXT: lui a0, %hi(bytes)
13 ; RV32I-NEXT: lbu a1, %lo(bytes)(a0)
14 ; RV32I-NEXT: addi a2, zero, 136
15 ; RV32I-NEXT: bne a1, a2, .LBB0_3
16 ; RV32I-NEXT: # %bb.1: # %entry
17 ; RV32I-NEXT: addi a0, a0, %lo(bytes)
18 ; RV32I-NEXT: lbu a0, 1(a0)
19 ; RV32I-NEXT: addi a1, zero, 7
20 ; RV32I-NEXT: bne a0, a1, .LBB0_3
21 ; RV32I-NEXT: # %bb.2: # %if.end
22 ; RV32I-NEXT: mv a0, zero
24 ; RV32I-NEXT: .LBB0_3: # %if.then
25 ; RV32I-NEXT: addi a0, zero, 1
28 %0 = load i8, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @bytes, i32 0, i32 0), align 1
29 %cmp = icmp eq i8 %0, -120
30 %1 = load i8, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @bytes, i32 0, i32 1), align 1
31 %cmp3 = icmp eq i8 %1, 7
32 %or.cond = and i1 %cmp, %cmp3
33 br i1 %or.cond, label %if.end, label %if.then
42 @shorts = global [5 x i16] zeroinitializer, align 2
44 define i32 @test_zext_i16() nounwind {
45 ; RV32I-LABEL: test_zext_i16:
46 ; RV32I: # %bb.0: # %entry
47 ; RV32I-NEXT: lui a0, %hi(shorts)
48 ; RV32I-NEXT: lhu a1, %lo(shorts)(a0)
49 ; RV32I-NEXT: lui a2, 16
50 ; RV32I-NEXT: addi a2, a2, -120
51 ; RV32I-NEXT: bne a1, a2, .LBB1_3
52 ; RV32I-NEXT: # %bb.1: # %entry
53 ; RV32I-NEXT: addi a0, a0, %lo(shorts)
54 ; RV32I-NEXT: lhu a0, 2(a0)
55 ; RV32I-NEXT: addi a1, zero, 7
56 ; RV32I-NEXT: bne a0, a1, .LBB1_3
57 ; RV32I-NEXT: # %bb.2: # %if.end
58 ; RV32I-NEXT: mv a0, zero
60 ; RV32I-NEXT: .LBB1_3: # %if.then
61 ; RV32I-NEXT: addi a0, zero, 1
64 %0 = load i16, i16* getelementptr inbounds ([5 x i16], [5 x i16]* @shorts, i32 0, i32 0), align 2
65 %cmp = icmp eq i16 %0, -120
66 %1 = load i16, i16* getelementptr inbounds ([5 x i16], [5 x i16]* @shorts, i32 0, i32 1), align 2
67 %cmp3 = icmp eq i16 %1, 7
68 %or.cond = and i1 %cmp, %cmp3
69 br i1 %or.cond, label %if.end, label %if.then