32 lines · c
1// REQUIRES: bpf-registered-target2// RUN: %clang_cc1 -triple bpf -emit-llvm -target-feature +alu32 %s -o - | FileCheck %s3// RUN: %clang_cc1 -triple bpf -emit-llvm -target-cpu v3 %s -o - | FileCheck %s4 5void test_generic_constraints(int var32, long var64) {6 asm("%0 = %1"7 : "=r"(var32)8 : "0"(var32));9 // CHECK: [[R32_ARG:%[a-zA-Z0-9]+]] = load i32, ptr10 // CHECK: call i32 asm "$0 = $1", "=r,0"(i32 [[R32_ARG]])11 12 asm("%0 = %1"13 : "=r"(var64)14 : "0"(var64));15 // CHECK: [[R64_ARG:%[a-zA-Z0-9]+]] = load i64, ptr16 // CHECK: call i64 asm "$0 = $1", "=r,0"(i64 [[R64_ARG]])17 18 asm("%0 = %1"19 : "=r"(var64)20 : "r"(var64));21 // CHECK: [[R64_ARG:%[a-zA-Z0-9]+]] = load i64, ptr22 // CHECK: call i64 asm "$0 = $1", "=r,r"(i64 [[R64_ARG]])23}24 25void test_constraint_w(int a) {26 asm("%0 = %1"27 : "=w"(a)28 : "w"(a));29 // CHECK: [[R32_ARG:%[a-zA-Z0-9]+]] = load i32, ptr30 // CHECK: call i32 asm "$0 = $1", "=w,w"(i32 [[R32_ARG]])31}32