| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -O3 -mtriple=riscv32 -mattr=+m,+xcvmem -verify-machineinstrs < %s \ |
| ; RUN: | FileCheck %s --check-prefixes=CHECK |
| |
| define i32 @test_heuristic(ptr %b, i32 %e, i1 %0) { |
| ; CHECK-LABEL: test_heuristic: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: add a3, a0, a1 |
| ; CHECK-NEXT: andi a2, a2, 1 |
| ; CHECK-NEXT: .LBB0_1: # %loop |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: cv.lbu a1, (a3), 1 |
| ; CHECK-NEXT: addi a0, a0, 1 |
| ; CHECK-NEXT: beqz a2, .LBB0_1 |
| ; CHECK-NEXT: # %bb.2: # %exit |
| ; CHECK-NEXT: mv a0, a1 |
| ; CHECK-NEXT: ret |
| entry: |
| %1 = getelementptr i8, ptr %b, i32 %e |
| br label %loop |
| |
| loop: ; preds = %loop, %entry |
| %2 = phi ptr [ %b, %entry ], [ %7, %loop ] |
| %3 = phi ptr [ %1, %entry ], [ %8, %loop ] |
| %4 = load i8, ptr %2, align 1 |
| %5 = load i8, ptr %3, align 1 |
| %6 = zext i8 %5 to i32 |
| %7 = getelementptr i8, ptr %2, i32 1 |
| %8 = getelementptr i8, ptr %3, i32 1 |
| br i1 %0, label %exit, label %loop |
| |
| exit: ; preds = %loop |
| ret i32 %6 |
| } |
