| // REQUIRES: bpf-registered-target |
| // RUN: %clang -target bpf -emit-llvm -S -Xclang -target-feature -Xclang +alu32 %s -o - | FileCheck %s |
| // RUN: %clang -target bpf -emit-llvm -S -mcpu=v3 %s -o - | FileCheck %s |
| |
| void test_generic_constraints(int var32, long var64) { |
| asm("%0 = %1" |
| : "=r"(var32) |
| : "0"(var32)); |
| // CHECK: [[R32_ARG:%[a-zA-Z0-9]+]] = load i32, i32* |
| // CHECK: call i32 asm "$0 = $1", "=r,0"(i32 [[R32_ARG]]) |
| |
| asm("%0 = %1" |
| : "=r"(var64) |
| : "0"(var64)); |
| // CHECK: [[R64_ARG:%[a-zA-Z0-9]+]] = load i64, i64* |
| // CHECK: call i64 asm "$0 = $1", "=r,0"(i64 [[R64_ARG]]) |
| |
| asm("%0 = %1" |
| : "=r"(var64) |
| : "r"(var64)); |
| // CHECK: [[R64_ARG:%[a-zA-Z0-9]+]] = load i64, i64* |
| // CHECK: call i64 asm "$0 = $1", "=r,r"(i64 [[R64_ARG]]) |
| } |
| |
| void test_constraint_w(int a) { |
| asm("%0 = %1" |
| : "=w"(a) |
| : "w"(a)); |
| // CHECK: [[R32_ARG:%[a-zA-Z0-9]+]] = load i32, i32* |
| // CHECK: call i32 asm "$0 = $1", "=w,w"(i32 [[R32_ARG]]) |
| } |