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 4 5@a = global [4096 x i32] zeroinitializer, align 4 6@b = global [4096 x i32] zeroinitializer, align 4 7 8; This test demonstrates very slightly improved codegen in the case that 9; a correct isLegalAddImmediate is implemented, thanks to LoopStrengthReduce. 10 11define i32 @main() nounwind { 12; RV32I-LABEL: main: 13; RV32I: # %bb.0: # %entry 14; RV32I-NEXT: lui a0, %hi(b) 15; RV32I-NEXT: addi a0, a0, %lo(b) 16; RV32I-NEXT: lui a1, %hi(a) 17; RV32I-NEXT: addi a1, a1, %lo(a) 18; RV32I-NEXT: lui a2, 1 19; RV32I-NEXT: mv a3, zero 20; RV32I-NEXT: .LBB0_1: # %for.body 21; RV32I-NEXT: # =>This Inner Loop Header: Depth=1 22; RV32I-NEXT: addi a4, a3, -2048 23; RV32I-NEXT: sw a4, 0(a1) 24; RV32I-NEXT: addi a1, a1, 4 25; RV32I-NEXT: sw a3, 0(a0) 26; RV32I-NEXT: addi a0, a0, 4 27; RV32I-NEXT: addi a3, a3, 1 28; RV32I-NEXT: bne a3, a2, .LBB0_1 29; RV32I-NEXT: # %bb.2: # %for.end 30; RV32I-NEXT: mv a0, zero 31; RV32I-NEXT: ret 32entry: 33 br label %for.body 34 35for.body: 36 %i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ] 37 %sub = add nsw i32 %i.08, -2048 38 %arrayidx = getelementptr inbounds [4096 x i32], [4096 x i32]* @a, i32 0, i32 %i.08 39 store i32 %sub, i32* %arrayidx, align 4 40 %arrayidx1 = getelementptr inbounds [4096 x i32], [4096 x i32]* @b, i32 0, i32 %i.08 41 store i32 %i.08, i32* %arrayidx1, align 4 42 %inc = add nuw nsw i32 %i.08, 1 43 %exitcond = icmp eq i32 %inc, 4096 44 br i1 %exitcond, label %for.end, label %for.body 45 46for.end: 47 ret i32 0 48} 49