1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -O3 < %s | FileCheck %s 3 4; A miscompilation found on https://github.com/llvm/llvm-project/issues/64289. 5; 1. PostOrderFunctionAttrsPass added readonly to the parameter. 6; 2. TailCallElimPass modified the parameter but kept readonly. 7; 3. LICMPass incorrectly hoisted the load instruction. 8 9define void @pr64289(ptr noalias byval(i64) %x) { 10; CHECK-LABEL: @pr64289( 11; CHECK-NEXT: start: 12; CHECK-NEXT: ret void 13; 14start: 15 %new_x = alloca i64, align 8 16 %x_val = load i64, ptr %x, align 8 17 %is_zero = icmp eq i64 %x_val, 0 18 br i1 %is_zero, label %end, label %recurse 19 20recurse: 21 store i64 0, ptr %new_x, align 8 22 call void @pr64289(ptr %new_x) 23 br label %end 24 25end: 26 ret void 27} 28