1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -O3 -mtriple=riscv32 -mattr=+m,+xcvmem -verify-machineinstrs < %s \ 3; RUN: | FileCheck %s --check-prefixes=CHECK 4 5define i32 @test_heuristic(ptr %b, i32 %e, i1 %0) { 6; CHECK-LABEL: test_heuristic: 7; CHECK: # %bb.0: # %entry 8; CHECK-NEXT: add a3, a0, a1 9; CHECK-NEXT: andi a2, a2, 1 10; CHECK-NEXT: .LBB0_1: # %loop 11; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 12; CHECK-NEXT: cv.lbu a1, (a3), 1 13; CHECK-NEXT: addi a0, a0, 1 14; CHECK-NEXT: beqz a2, .LBB0_1 15; CHECK-NEXT: # %bb.2: # %exit 16; CHECK-NEXT: mv a0, a1 17; CHECK-NEXT: ret 18entry: 19 %1 = getelementptr i8, ptr %b, i32 %e 20 br label %loop 21 22loop: ; preds = %loop, %entry 23 %2 = phi ptr [ %b, %entry ], [ %7, %loop ] 24 %3 = phi ptr [ %1, %entry ], [ %8, %loop ] 25 %4 = load i8, ptr %2, align 1 26 %5 = load i8, ptr %3, align 1 27 %6 = zext i8 %5 to i32 28 %7 = getelementptr i8, ptr %2, i32 1 29 %8 = getelementptr i8, ptr %3, i32 1 30 br i1 %0, label %exit, label %loop 31 32exit: ; preds = %loop 33 ret i32 %6 34} 35