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ARM: Add mappings for ACLE prefetch intrinsics 

Implement __pld, __pldx, __pli and __plix builtin intrinsics as specified in
ARM ACLE 2.0.

llvm-svn: 215599
This commit is contained in:
Yi Kong 2014-08-13 23:20:15 +00:00
parent b47683223f
commit 45a09319bf
3 changed files with 59 additions and 0 deletions
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23
clang/lib/Headers/arm_acle.h
View File

@ -66,6 +66,29 @@ static __inline__ void __attribute__((always_inline, nodebug)) __yield(void) {
} }
#endif #endif
/* 8.6 Memory prefetch intrinsics */
/* 8.6.1 Data prefetch */
#define __pld(addr) __pldx(0, 0, 0, addr)
#if __ARM_32BIT_STATE
#define __pldx(access_kind, cache_level, retention_policy, addr) \
__builtin_arm_prefetch(addr, access_kind, 1)
#else
#define __pldx(access_kind, cache_level, retention_policy, addr) \
__builtin_arm_prefetch(addr, access_kind, cache_level, retention_policy, 1)
#endif
/* 8.6.2 Instruction prefetch */
#define __pli(addr) __plix(0, 0, addr)
#if __ARM_32BIT_STATE
#define __plix(cache_level, retention_policy, addr) \
__builtin_arm_prefetch(addr, 0, 0)
#else
#define __plix(cache_level, retention_policy, addr) \
__builtin_arm_prefetch(addr, 0, cache_level, retention_policy, 0)
#endif
/* 8.7 NOP */ /* 8.7 NOP */
static __inline__ void __attribute__((always_inline, nodebug)) __nop(void) { static __inline__ void __attribute__((always_inline, nodebug)) __nop(void) {
__builtin_arm_nop(); __builtin_arm_nop();

29
clang/test/CodeGen/arm_acle.c
View File

@ -62,6 +62,35 @@ void test_sevl(void) {
__sevl(); __sevl();
} }
/* 8.6 Memory prefetch intrinsics */
/* 8.6.1 Data prefetch */
// ARM-LABEL: test_pld
// ARM: call void @llvm.prefetch(i8* null, i32 0, i32 3, i32 1)
void test_pld() {
__pld(0);
}
// ARM-LABEL: test_pldx
// AArch32: call void @llvm.prefetch(i8* null, i32 1, i32 3, i32 1)
// AArch64: call void @llvm.prefetch(i8* null, i32 1, i32 1, i32 1)
void test_pldx() {
__pldx(1, 2, 0, 0);
}
/* 8.6.2 Instruction prefetch */
// ARM-LABEL: test_pli
// ARM: call void @llvm.prefetch(i8* null, i32 0, i32 3, i32 0)
void test_pli() {
__pli(0);
}
// ARM-LABEL: test_plix
// AArch32: call void @llvm.prefetch(i8* null, i32 0, i32 3, i32 0)
// AArch64: call void @llvm.prefetch(i8* null, i32 0, i32 1, i32 0)
void test_plix() {
__plix(2, 0, 0);
}
/* 8.7 NOP */ /* 8.7 NOP */
// ARM-LABEL: test_nop // ARM-LABEL: test_nop
// AArch32: call void @llvm.arm.hint(i32 0) // AArch32: call void @llvm.arm.hint(i32 0)

7
clang/test/Sema/arm_acle.c
View File

@ -30,3 +30,10 @@ int32_t test_ssat_const_diag(int32_t t, const int32_t v) {
int32_t test_usat_const_diag(int32_t t, const int32_t v) { int32_t test_usat_const_diag(int32_t t, const int32_t v) {
return __usat(t, v); // expected-error-re {{argument to {{.*}} must be a constant integer}} return __usat(t, v); // expected-error-re {{argument to {{.*}} must be a constant integer}}
} }
/*
* Prefetch intrinsics
*/
void test_pldx_const_diag(int32_t i) {
__pldx(i, 0, 0, 0); // expected-error-re {{argument to {{.*}} must be a constant integer}}
}