Auto merge of rust-lang#114225 - workingjubilee:only-golden-arches, r=compiler-errors

bors · bors · commit 03b8b50fcb0c · 2023-07-31T06:28:01.000Z
Only golden arches

A number of tests in the test suite have applied the somewhat comedic practice of ignoring *every* single target architecture that rustc has ever supported. This is silly, when they are clearly tests built around certain assumptions, primarily of the x86-64 architecture, or in one case when they are only relevant for a handful of 32-bit targets. This has even resulted, in one case, in the same architecture being ignored twice!

Document these better, and use a "revision + only-arch" idiom in the test headers to denote the "golden arches" that actually pass these tests.
diff --git a/tests/codegen/abi-main-signature-16bit-c-int.rs b/tests/codegen/abi-main-signature-16bit-c-int.rs
@@ -2,22 +2,10 @@
 // entry point. It must match C's `int main(int, char **)`.
 
 // This test is for targets with 16bit c_int only.
-// ignore-aarch64
-// ignore-arm
-// ignore-asmjs
-// ignore-hexagon
-// ignore-mips
-// ignore-mips64
-// ignore-powerpc
-// ignore-powerpc64
-// ignore-riscv64
-// ignore-s390x
-// ignore-sparc
-// ignore-sparc64
-// ignore-wasm32
-// ignore-x86
-// ignore-x86_64
-// ignore-loongarch64
+// revisions: avr msp
+//[avr] only-avr
+//[msp] only-msp430
+
 
 fn main() {
 }
diff --git a/tests/codegen/abi-main-signature-32bit-c-int.rs b/tests/codegen/abi-main-signature-32bit-c-int.rs
@@ -3,6 +3,7 @@
 
 // This test is for targets with 32bit c_int only.
 // ignore-msp430
+// ignore-avr
 
 fn main() {
 }
diff --git a/tests/codegen/global_asm.rs b/tests/codegen/global_asm.rs
@@ -1,24 +1,6 @@
-// ignore-aarch64
-// ignore-arm
-// ignore-avr
-// ignore-bpf
-// ignore-bpf
-// ignore-hexagon
-// ignore-mips
-// ignore-mips64
-// ignore-msp430
-// ignore-powerpc64
-// ignore-powerpc
-// ignore-sparc
-// ignore-sparc64
-// ignore-s390x
-// ignore-thumb
-// ignore-nvptx64
-// ignore-spirv
-// ignore-wasm32
-// ignore-wasm64
-// ignore-emscripten
-// ignore-loongarch64
+// revisions: x32 x64
+//[x32] only-x86
+//[x64] only-x86_64
 // compile-flags: -C no-prepopulate-passes
 
 #![crate_type = "lib"]
diff --git a/tests/codegen/global_asm_include.rs b/tests/codegen/global_asm_include.rs
@@ -1,24 +1,6 @@
-// ignore-aarch64
-// ignore-arm
-// ignore-avr
-// ignore-bpf
-// ignore-bpf
-// ignore-hexagon
-// ignore-mips
-// ignore-mips64
-// ignore-msp430
-// ignore-powerpc64
-// ignore-powerpc
-// ignore-sparc
-// ignore-sparc64
-// ignore-s390x
-// ignore-thumb
-// ignore-nvptx64
-// ignore-spirv
-// ignore-wasm32
-// ignore-wasm64
-// ignore-emscripten
-// ignore-loongarch64
+// revisions: x32 x64
+//[x32] only-x86
+//[x64] only-x86_64
 // compile-flags: -C no-prepopulate-passes
 
 #![crate_type = "lib"]
diff --git a/tests/codegen/global_asm_x2.rs b/tests/codegen/global_asm_x2.rs
@@ -1,24 +1,6 @@
-// ignore-aarch64
-// ignore-arm
-// ignore-avr
-// ignore-bpf
-// ignore-bpf
-// ignore-hexagon
-// ignore-mips
-// ignore-mips64
-// ignore-msp430
-// ignore-powerpc64
-// ignore-powerpc
-// ignore-sparc
-// ignore-sparc64
-// ignore-s390x
-// ignore-thumb
-// ignore-nvptx64
-// ignore-spirv
-// ignore-wasm32
-// ignore-wasm64
-// ignore-emscripten
-// ignore-loongarch64
+// revisions: x32 x64
+//[x32] only-x86
+//[x64] only-x86_64
 // compile-flags: -C no-prepopulate-passes
 
 #![crate_type = "lib"]
diff --git a/tests/codegen/repr/transparent-imm-array.rs b/tests/codegen/repr/transparent-imm-array.rs
@@ -1,19 +1,15 @@
+// revisions: arm mips thumb wasm32
 // compile-flags: -C no-prepopulate-passes
 //
-
-// ignore-aarch64
+//[arm] only-arm
+//[mips] only-mips
+//[thumb] only-thumb
+//[wasm32] only-wasm32
 // ignore-emscripten
-// ignore-mips64
-// ignore-powerpc
-// ignore-powerpc64
-// ignore-riscv64 see codegen/riscv-abi
-// ignore-s390x
-// ignore-sparc
-// ignore-sparc64
-// ignore-x86
-// ignore-x86_64
-// ignore-loongarch64
-// See repr-transparent.rs
+// See ./transparent.rs
+// Some platforms pass large aggregates using immediate arrays in LLVMIR
+// Other platforms pass large aggregates using struct pointer in LLVMIR
+// This covers the "immediate array" case.
 
 #![feature(transparent_unions)]
 
diff --git a/tests/codegen/repr/transparent-mips64.rs b/tests/codegen/repr/transparent-mips64.rs
@@ -2,7 +2,7 @@
 //
 
 // only-mips64
-// See repr-transparent.rs
+// See ./transparent.rs
 
 #![feature(transparent_unions)]
 
diff --git a/tests/codegen/repr/transparent-struct-ptr.rs b/tests/codegen/repr/transparent-struct-ptr.rs
@@ -1,18 +1,16 @@
+// revisions: x32 x64 sparc sparc64
 // compile-flags: -O -C no-prepopulate-passes
 //
-
-// ignore-arm
-// ignore-aarch64
-// ignore-mips
-// ignore-mips64
-// ignore-powerpc
-// ignore-powerpc64
-// ignore-riscv64 see codegen/riscv-abi
-// ignore-s390x
+//[x32] only-x86
+//[x64] only-x86_64
+//[sparc] only-sparc
+//[sparc64] only-sparc64
 // ignore-windows
-// ignore-loongarch64
-// ignore-wasm32-bare
-// See repr-transparent.rs
+// See ./transparent.rs
+// Some platforms pass large aggregates using immediate arrays in LLVMIR
+// Other platforms pass large aggregates using struct pointer in LLVMIR
+// This covers the "struct pointer" case.
+
 
 #![feature(transparent_unions)]
 
diff --git a/tests/codegen/repr/transparent-sysv64.rs b/tests/codegen/repr/transparent-sysv64.rs
diff --git a/tests/codegen/repr/transparent.rs b/tests/codegen/repr/transparent.rs
@@ -1,10 +1,13 @@
 // compile-flags: -O -C no-prepopulate-passes
-
 // ignore-riscv64 riscv64 has an i128 type used with test_Vector
-// see codegen/riscv-abi for riscv functiona call tests
 // ignore-s390x s390x with default march passes vector types per reference
 // ignore-loongarch64 see codegen/loongarch-abi for loongarch function call tests
 
+// This codegen test embeds assumptions about how certain "C" psABIs are handled
+// so it doesn't apply to all architectures or even all OS
+// For RISCV: see codegen/riscv-abi
+// For LoongArch: see codegen/loongarch-abi
+
 #![crate_type="lib"]
 #![feature(repr_simd, transparent_unions)]
 
@@ -159,7 +162,7 @@ pub union UnionF32WithZsts {
 pub extern "C" fn test_UnionF32WithZsts(_: UnionF32WithZsts) -> UnionF32WithZsts { loop {} }
 
 
-// All that remains to be tested are aggregates. They are tested in separate files called repr-
+// All that remains to be tested are aggregates. They are tested in separate files called
 // transparent-*.rs  with `only-*` or `ignore-*` directives, because the expected LLVM IR
 // function signatures vary so much that it's not reasonably possible to cover all of them with a
 // single CHECK line.
diff --git a/tests/debuginfo/thread-names.rs b/tests/debuginfo/thread-names.rs
@@ -1,15 +1,8 @@
 // compile-flags:-g
+// revisions: macos windows
 // We can't set the main thread name on Linux because it renames the process (#97191)
-// ignore-linux
-// ignore-android
-// ignore-dragonfly
-// ignore-emscripten
-// ignore-freebsd
-// ignore-haiku
-// ignore-ios
-// ignore-netbsd
-// ignore-openbsd
-// ignore-solaris
+//[macos] only-macos
+//[windows] only-windows
 // ignore-sgx
 // ignore-windows-gnu
 
diff --git a/tests/ui/abi/stack-probes-lto.rs b/tests/ui/abi/stack-probes-lto.rs
@@ -1,13 +1,7 @@
+// revisions: x32 x64
 // run-pass
-// ignore-arm
-// ignore-aarch64
-// ignore-mips
-// ignore-mips64
-// ignore-sparc
-// ignore-sparc64
-// ignore-loongarch64
-// ignore-wasm
-// ignore-emscripten no processes
+//[x32] only-x86
+//[x64] only-x86_64
 // ignore-sgx no processes
 // ignore-musl FIXME #31506
 // ignore-fuchsia no exception handler registered for segfault
diff --git a/tests/ui/abi/stack-probes.rs b/tests/ui/abi/stack-probes.rs
@@ -1,12 +1,7 @@
+// revisions: x32 x64
 // run-pass
-// ignore-arm
-// ignore-aarch64
-// ignore-mips
-// ignore-mips64
-// ignore-sparc
-// ignore-sparc64
-// ignore-loongarch64
-// ignore-wasm
+//[x32] only-x86
+//[x64] only-x86_64
 // ignore-emscripten no processes
 // ignore-sgx no processes
 // ignore-fuchsia no exception handler registered for segfault
diff --git a/tests/ui/target-feature/gate.rs b/tests/ui/target-feature/gate.rs
@@ -1,16 +1,5 @@
-// ignore-arm
-// ignore-aarch64
-// ignore-wasm
-// ignore-emscripten
-// ignore-mips
-// ignore-mips64
-// ignore-powerpc
-// ignore-powerpc64
-// ignore-riscv64
-// ignore-sparc
-// ignore-sparc64
-// ignore-s390x
-// ignore-loongarch64
+// only-x86_64
+//
 // gate-test-sse4a_target_feature
 // gate-test-powerpc_target_feature
 // gate-test-avx512_target_feature
diff --git a/tests/ui/target-feature/gate.stderr b/tests/ui/target-feature/gate.stderr
@@ -1,5 +1,5 @@
 error[E0658]: the target feature `avx512bw` is currently unstable
-  --> $DIR/gate.rs:32:18
+  --> $DIR/gate.rs:21:18
    |
 LL | #[target_feature(enable = "avx512bw")]
    |                  ^^^^^^^^^^^^^^^^^^^
diff --git a/tests/ui/target-feature/invalid-attribute.rs b/tests/ui/target-feature/invalid-attribute.rs
@@ -1,16 +1,4 @@
-// ignore-arm
-// ignore-aarch64
-// ignore-wasm
-// ignore-emscripten
-// ignore-mips
-// ignore-mips64
-// ignore-powerpc
-// ignore-powerpc64
-// ignore-riscv64
-// ignore-s390x
-// ignore-sparc
-// ignore-sparc64
-// ignore-loongarch64
+// only-x86_64
 
 #![warn(unused_attributes)]
 
diff --git a/tests/ui/target-feature/invalid-attribute.stderr b/tests/ui/target-feature/invalid-attribute.stderr

Original file line number	Diff line number	Diff line change
`@@ -3,6 +3,7 @@`
`3`	`3`
`4`	`4`	`// This test is for targets with 32bit c_int only.`
`5`	`5`	`// ignore-msp430`
	`6`	`+// ignore-avr`
`6`	`7`
`7`	`8`	`fn main() {`
`8`	`9`	`}`