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| author | Guillaume Gomez <guillaume1.gomez@gmail.com> | 2025-07-21 14:34:12 +0200 | 
|---|---|---|
| committer | Guillaume Gomez <guillaume1.gomez@gmail.com> | 2025-07-22 14:28:48 +0200 | 
| commit | a27f3e3fd1e4d16160f8885b6b06665b5319f56c (patch) | |
| tree | b033935392cbadf6f85d2dbddf433a88e323aeeb /tests/codegen-llvm/asm/multiple-options.rs | |
| parent | ed93c1783b404d728d4809973a0550eb33cd293f (diff) | |
| download | rust-a27f3e3fd1e4d16160f8885b6b06665b5319f56c.tar.gz rust-a27f3e3fd1e4d16160f8885b6b06665b5319f56c.zip | |
Rename `tests/codegen` into `tests/codegen-llvm`
Diffstat (limited to 'tests/codegen-llvm/asm/multiple-options.rs')
| -rw-r--r-- | tests/codegen-llvm/asm/multiple-options.rs | 54 | 
1 files changed, 54 insertions, 0 deletions
| diff --git a/tests/codegen-llvm/asm/multiple-options.rs b/tests/codegen-llvm/asm/multiple-options.rs new file mode 100644 index 00000000000..4d87471a193 --- /dev/null +++ b/tests/codegen-llvm/asm/multiple-options.rs @@ -0,0 +1,54 @@ +//@ compile-flags: -Copt-level=3 +//@ only-x86_64 + +#![crate_type = "rlib"] + +use std::arch::asm; + +// CHECK-LABEL: @pure +// CHECK-NOT: asm +// CHECK: ret void +#[no_mangle] +pub unsafe fn pure(x: i32) { + let y: i32; + asm!("", out("ax") y, in("cx") x, options(pure), options(nomem)); +} + +pub static mut VAR: i32 = 0; +pub static mut DUMMY_OUTPUT: i32 = 0; + +// CHECK-LABEL: @readonly +// CHECK: call i32 asm +// CHECK: ret i32 1 +#[no_mangle] +pub unsafe fn readonly() -> i32 { + VAR = 1; + asm!("", out("ax") DUMMY_OUTPUT, options(pure), options(readonly)); + VAR +} + +// CHECK-LABEL: @nomem +// CHECK-NOT: store +// CHECK: call i32 asm +// CHECK: store +// CHECK: ret i32 2 +#[no_mangle] +pub unsafe fn nomem() -> i32 { + VAR = 1; + asm!("", out("ax") DUMMY_OUTPUT, options(pure), options(nomem)); + VAR = 2; + VAR +} + +// CHECK-LABEL: @not_nomem +// CHECK: store +// CHECK: call i32 asm +// CHECK: store +// CHECK: ret i32 2 +#[no_mangle] +pub unsafe fn not_nomem() -> i32 { + VAR = 1; + asm!("", out("ax") DUMMY_OUTPUT, options(pure), options(readonly)); + VAR = 2; + VAR +} | 
