xref: /llvm-project/llvm/test/CodeGen/RISCV/load-setcc-combine.ll (revision d5167c84f9eddf6a37c667d4673bf694dfd8be37)
1*d5167c84SCraig Topper; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
2*d5167c84SCraig Topper; RUN: llc < %s -mtriple=riscv64 | FileCheck %s
3*d5167c84SCraig Topper
4*d5167c84SCraig Topperdefine i8 @zext_nonneg_load_i16(ptr %x, ptr %y) {
5*d5167c84SCraig Topper; CHECK-LABEL: zext_nonneg_load_i16:
6*d5167c84SCraig Topper; CHECK:       # %bb.0:
7*d5167c84SCraig Topper; CHECK-NEXT:    lh a0, 0(a0)
8*d5167c84SCraig Topper; CHECK-NEXT:    bltz a0, .LBB0_2
9*d5167c84SCraig Topper; CHECK-NEXT:  # %bb.1: # %cont
10*d5167c84SCraig Topper; CHECK-NEXT:    add a0, a1, a0
11*d5167c84SCraig Topper; CHECK-NEXT:    lbu a0, 0(a0)
12*d5167c84SCraig Topper; CHECK-NEXT:    ret
13*d5167c84SCraig Topper; CHECK-NEXT:  .LBB0_2: # %exit
14*d5167c84SCraig Topper; CHECK-NEXT:    li a0, 0
15*d5167c84SCraig Topper; CHECK-NEXT:    ret
16*d5167c84SCraig Topper  %a = load i16, ptr %x
17*d5167c84SCraig Topper  %b = icmp slt i16 %a, 0
18*d5167c84SCraig Topper  br i1 %b, label %exit, label %cont
19*d5167c84SCraig Topper
20*d5167c84SCraig Toppercont:
21*d5167c84SCraig Topper  %c = zext nneg i16 %a to i64
22*d5167c84SCraig Topper  %d = getelementptr i8, ptr %y, i64 %c
23*d5167c84SCraig Topper  %e = load i8, ptr %d
24*d5167c84SCraig Topper  ret i8 %e
25*d5167c84SCraig Topper
26*d5167c84SCraig Topperexit:
27*d5167c84SCraig Topper  ret i8 0
28*d5167c84SCraig Topper}
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