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1; RUN: llc -mtriple=bpfel -mcpu=v1 < %s 2>&1 | FileCheck --check-prefix=CHECK-64 %s2; RUN: llc -mtriple=bpfeb -mcpu=v1 < %s 2>&1 | FileCheck --check-prefix=CHECK-64 %s3; RUN: llc -mtriple=bpfel -mcpu=v1 -mattr=+alu32 < %s 2>&1 | FileCheck --check-prefix=CHECK-32 %s4; RUN: llc -mtriple=bpfeb -mcpu=v1 -mattr=+alu32 < %s 2>&1 | FileCheck --check-prefix=CHECK-32 %s5 6; This file is generated with the source command and source7; $ clang -target bpf -O2 -S -emit-llvm t.c8; $ cat t.c9; int test(int *ptr, unsigned long long a) {10; __sync_fetch_and_add(ptr, a);11; return *ptr;12; }13;14; NOTE: passing unsigned long long as the second operand of __sync_fetch_and_add15; could effectively create sub-register reference coming from indexing a full16; register which could then exerceise hasLivingDefs inside BPFMIChecker.cpp.17 18define dso_local i32 @test(ptr nocapture %ptr, i64 %a) {19entry:20 %conv = trunc i64 %a to i3221 %0 = atomicrmw add ptr %ptr, i32 %conv seq_cst22; CHECK-64: lock *(u32 *)(r1 + 0) += r223; CHECK-32: w2 = atomic_fetch_add((u32 *)(r1 + 0), w2)24 %1 = load i32, ptr %ptr, align 425 ret i32 %126}27