[Driver] Remove a bunch of unnecessary REQUIRES constraints (#94055)

Removed foo-registered-target constraints from a bunch of tests, because
mostly the driver doesn't need to have a target availabile. I ran
check-clang-driver using a build with only the XCore target, and these
all passed.

There are ~50 tests that still have foo-registered-target, and it looks
like most of them are either doing codegen when they don't need to, or
don't really belong in the Driver tests. But that's a task for another
day.

Author: pogo59

clang/test/Driver/aarch64-outliner.c

@@ -1,4 +1,3 @@
-// REQUIRES: aarch64-registered-target
 // RUN: %clang --target=aarch64 -moutline -S %s -### 2>&1 | FileCheck %s -check-prefix=ON
 // RUN: %clang --target=aarch64_be -moutline -S %s -### 2>&1 | FileCheck %s -check-prefix=ON
 // ON: "-mllvm" "-enable-machine-outliner"

clang/test/Driver/amdgcn-gz-options.cl

@@ -1,4 +1,4 @@
-// REQUIRES: zlib, amdgpu-registered-target
+// REQUIRES: zlib
 
 // RUN: %clang -### -target amdgcn-amd-amdhsa -gz=none -x assembler %s 2>&1 | FileCheck -check-prefix CHECK-OPT_GZ_EQ_NONE %s
 // RUN: %clang -### -target amdgcn-amd-amdhsa -gz=none -nogpulib %s 2>&1 | FileCheck -check-prefix CHECK-OPT_GZ_EQ_NONE %s

clang/test/Driver/amdgpu-hip-system-arch.c

@@ -1,6 +1,4 @@
 // REQUIRES: system-linux
-// REQUIRES: x86-registered-target
-// REQUIRES: amdgpu-registered-target
 // REQUIRES: shell
 
 // RUN: mkdir -p %t

clang/test/Driver/amdgpu-invalid-target-id.s

@@ -1,6 +1,3 @@
-// REQUIRES: x86-registered-target
-// REQUIRES: amdgpu-registered-target
-
 // RUN: not %clang -target amdgcn-amd-amdhsa \
 // RUN:   -mcpu=gfx908xnack -nostdlib \
 // RUN:   %s 2>&1 | FileCheck -check-prefix=NOPLUS %s

clang/test/Driver/amdgpu-macros.cl

@@ -1,4 +1,3 @@
-// REQUIRES: amdgpu-registered-target
 // Check that appropriate macros are defined for every supported AMDGPU
 // "-target" and "-mcpu" options.
 

clang/test/Driver/amdgpu-openmp-system-arch-fail.c

@@ -1,6 +1,4 @@
 // REQUIRES: system-linux
-// REQUIRES: x86-registered-target
-// REQUIRES: amdgpu-registered-target
 // REQUIRES: shell
 
 // RUN: mkdir -p %t

clang/test/Driver/amdgpu-openmp-toolchain.c

@@ -1,5 +1,3 @@
-// REQUIRES: x86-registered-target
-// REQUIRES: amdgpu-registered-target
 // RUN:   %clang -### --target=x86_64-unknown-linux-gnu -fopenmp -fopenmp-targets=amdgcn-amd-amdhsa \
 // RUN:          -Xopenmp-target=amdgcn-amd-amdhsa -march=gfx906 --libomptarget-amdgpu-bc-path=%S/Inputs/hip_dev_lib -nogpulib %s 2>&1 \
 // RUN:   | FileCheck %s

clang/test/Driver/arm-float-abi-runtime-path.c

@@ -1,8 +1,6 @@
 /// Check that libraries built with the per target runtime directory layout
 /// are selected correctly when using variations of Arm triples.
 
-// REQUIRES: arm-registered-target
-
 // RUN: %clang %s --target=arm-unknown-linux-gnueabihf -print-runtime-dir \
 // RUN:        -resource-dir=%S/Inputs/arm_float_abi_runtime_path 2>&1 | FileCheck -check-prefix=ARMHF %s
 /// "armv7l" should be normalised to just "arm".

clang/test/Driver/arm-float-abi.c

@@ -1,4 +1,3 @@
-// REQUIRES: arm-registered-target
 // RUN: not %clang %s -target armv7-apple-ios -mfloat-abi=hard 2>&1 | FileCheck -check-prefix=ARMV7-ERROR %s
 // RUN: %clang %s -target armv7-apple-ios -mfloat-abi=softfp -### 2>&1 | FileCheck -check-prefix=NOERROR %s
 // RUN: %clang %s -arch armv7 -target thumbv7-apple-darwin-eabi -mfloat-abi=hard -### 2>&1 | FileCheck -check-prefix=NOERROR %s

clang/test/Driver/arm-machine-outliner.c

@@ -1,4 +1,3 @@
-// REQUIRES: arm-registered-target
 // RUN: %clang -target armv7-linux-gnueabihf -moutline -c %s -### 2>&1 | FileCheck %s -check-prefix=ON
 // ON: "-mllvm" "-enable-machine-outliner"
 // RUN: %clang -target armv7-linux-gnueabihf -flto -moutline %s -### 2>&1 | FileCheck %s -check-prefix=ON-LTO