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; 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
}
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