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llvm-project/clang/test/CodeGen/named_reg_global.c

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Non-allocatable Global Named Register This patch implements global named registers in Clang, lowering to the just created intrinsics in LLVM (@llvm.read/write_register). A new type of LValue had to be created (Register), which just adds support to carry the metadata node containing the name of the register. Two new methods to emit loads and stores interoperate with another to emit the named metadata node. No guarantees are being made and only non-allocatable global variable named registers are being supported. Local named register support is unchanged. llvm-svn: 209149
2014-05-20 02:15:42 +08:00
// RUN: %clang_cc1 -triple x86_64-linux-gnu -S -emit-llvm %s -o - | FileCheck %s
// RUN: %clang_cc1 -triple arm64-linux-gnu -S -emit-llvm %s -o - | FileCheck %s
// RUN: %clang_cc1 -triple armv7-linux-gnu -S -emit-llvm %s -o - | FileCheck %s
Make global named registers internal variables llvm-svn: 209289
2014-05-21 18:40:27 +08:00
// CHECK-NOT: @sp = common global
Non-allocatable Global Named Register This patch implements global named registers in Clang, lowering to the just created intrinsics in LLVM (@llvm.read/write_register). A new type of LValue had to be created (Register), which just adds support to carry the metadata node containing the name of the register. Two new methods to emit loads and stores interoperate with another to emit the named metadata node. No guarantees are being made and only non-allocatable global variable named registers are being supported. Local named register support is unchanged. llvm-svn: 209149
2014-05-20 02:15:42 +08:00
register unsigned long current_stack_pointer asm("sp");
Add pointer types to global named register This patch adds support for pointer types in global named registers variables. It'll be lowered as a pair of read/write_register and inttoptr/ptrtoint calls. Also adds some early checks on types on SemaDecl to avoid the assert. Tests changed accordingly. (PR19837) llvm-svn: 210274
2014-06-06 00:45:22 +08:00
struct p4_Thread {
struct {
int len;
} word;
};
// Testing pointer types as well
register struct p4_Thread *p4TH asm("sp");
Non-allocatable Global Named Register This patch implements global named registers in Clang, lowering to the just created intrinsics in LLVM (@llvm.read/write_register). A new type of LValue had to be created (Register), which just adds support to carry the metadata node containing the name of the register. Two new methods to emit loads and stores interoperate with another to emit the named metadata node. No guarantees are being made and only non-allocatable global variable named registers are being supported. Local named register support is unchanged. llvm-svn: 209149
2014-05-20 02:15:42 +08:00
// CHECK: define{{.*}} i[[bits:[0-9]+]] @get_stack_pointer_addr()
// CHECK: [[ret:%[0-9]+]] = call i[[bits]] @llvm.read_register.i[[bits]](metadata !0)
// CHECK: ret i[[bits]] [[ret]]
unsigned long get_stack_pointer_addr() {
return current_stack_pointer;
}
// CHECK: declare{{.*}} i[[bits]] @llvm.read_register.i[[bits]](metadata)
Using SmallString and correct addr var llvm-svn: 209180
2014-05-20 07:25:25 +08:00
// CHECK: define{{.*}} void @set_stack_pointer_addr(i[[bits]] %addr) #0 {
Update Clang tests to handle explicitly typed load changes in LLVM. llvm-svn: 230795
2015-02-28 05:19:58 +08:00
// CHECK: [[sto:%[0-9]+]] = load i[[bits]], i[[bits]]* %
Non-allocatable Global Named Register This patch implements global named registers in Clang, lowering to the just created intrinsics in LLVM (@llvm.read/write_register). A new type of LValue had to be created (Register), which just adds support to carry the metadata node containing the name of the register. Two new methods to emit loads and stores interoperate with another to emit the named metadata node. No guarantees are being made and only non-allocatable global variable named registers are being supported. Local named register support is unchanged. llvm-svn: 209149
2014-05-20 02:15:42 +08:00
// CHECK: call void @llvm.write_register.i[[bits]](metadata !0, i[[bits]] [[sto]])
// CHECK: ret void
void set_stack_pointer_addr(unsigned long addr) {
current_stack_pointer = addr;
}
// CHECK: declare{{.*}} void @llvm.write_register.i[[bits]](metadata, i[[bits]])
Add pointer types to global named register This patch adds support for pointer types in global named registers variables. It'll be lowered as a pair of read/write_register and inttoptr/ptrtoint calls. Also adds some early checks on types on SemaDecl to avoid the assert. Tests changed accordingly. (PR19837) llvm-svn: 210274
2014-06-06 00:45:22 +08:00
// CHECK: define {{.*}}@fn1
int fn1() {
return (*p4TH).word.len;
}
// CHECK: %[[regr:[0-9]+]] = call i[[bits]] @llvm.read_register.i[[bits]](metadata !0)
// CHECK: inttoptr i[[bits]] %[[regr]] to %struct.p4_Thread*
// CHECK: define {{.*}}@fn2
void fn2(struct p4_Thread *val) {
p4TH = val;
}
Fix bot for named register test llvm-svn: 210275
2014-06-06 00:52:20 +08:00
// CHECK: %[[regw:[0-9]+]] = ptrtoint %struct.p4_Thread* %{{.*}} to i[[bits]]
Add pointer types to global named register This patch adds support for pointer types in global named registers variables. It'll be lowered as a pair of read/write_register and inttoptr/ptrtoint calls. Also adds some early checks on types on SemaDecl to avoid the assert. Tests changed accordingly. (PR19837) llvm-svn: 210274
2014-06-06 00:45:22 +08:00
// CHECK: call void @llvm.write_register.i[[bits]](metadata !0, i[[bits]] %[[regw]])
Non-allocatable Global Named Register This patch implements global named registers in Clang, lowering to the just created intrinsics in LLVM (@llvm.read/write_register). A new type of LValue had to be created (Register), which just adds support to carry the metadata node containing the name of the register. Two new methods to emit loads and stores interoperate with another to emit the named metadata node. No guarantees are being made and only non-allocatable global variable named registers are being supported. Local named register support is unchanged. llvm-svn: 209149
2014-05-20 02:15:42 +08:00
// CHECK: !llvm.named.register.sp = !{!0}
IR: Make metadata typeless in assembly, clang side Match LLVM changes from r224257. llvm-svn: 224259
2014-12-16 03:10:08 +08:00
// CHECK: !0 = !{!"sp"}