Hi, Below is the patch that implements prefetching support.
This patch has been already discussed on a) https://gcc.gnu.org/ml/gcc-patches/2014-02/msg01644.html b) https://gcc.gnu.org/ml/gcc-patches/2014-07/msg00612.html I have not added a test as there are ample tests in compile and execute suites. "make -k check" passes. Ok for trunk? Changelog: 2014-10-30 Ganesh Gopalasubramanian <ganesh.gopalasubraman...@amd.com> * config/aarch64/aarch64.md (define_insn "prefetch"): New. * config/arm/types.md (define_attr "type"): Add prefetch. Regards Ganesh diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md index 74b554e..12a3f170 100644 --- a/gcc/config/aarch64/aarch64.md +++ b/gcc/config/aarch64/aarch64.md @@ -320,6 +320,38 @@ [(set_attr "type" "no_insn")] ) + +(define_insn "prefetch" + [(prefetch (match_operand:DI 0 "address_operand" "r") + (match_operand:QI 1 "const_int_operand" "") + (match_operand:QI 2 "const_int_operand" ""))] + "" + "* +{ + const char * pftype[2][10] + = { {\"PLDL1STRM\", \"PLDL3KEEP\", \"PLDL2KEEP\", \"PLDL1KEEP\"}, + {\"PSTL1STRM\", \"PSTL3KEEP\", \"PSTL2KEEP\", \"PSTL1KEEP\"}, + }; + + int locality = INTVAL (operands[2]); + char pattern[100]; + + gcc_assert (IN_RANGE (locality, 0, 3)); + + strcpy (pattern, \"prfm\\t\"); + strcat (pattern, (const char*)pftype[INTVAL(operands[1])][locality]); + strcat (pattern, \", %a0\"); + + output_asm_insn (pattern, + operands); + + return \"\"; + +}" + [(set_attr "type" "prefetch")] +) + (define_insn "trap" [(trap_if (const_int 1) (const_int 8))] "" diff --git a/gcc/config/arm/types.md b/gcc/config/arm/types.md index c1151f5..8b4b7a1 100644 --- a/gcc/config/arm/types.md +++ b/gcc/config/arm/types.md @@ -118,6 +118,7 @@ ; mvn_shift_reg inverting move instruction, shifted operand by a register. ; no_insn an insn which does not represent an instruction in the ; final output, thus having no impact on scheduling. +; prefetch a prefetch instruction ; rbit reverse bits. ; rev reverse bytes. ; sdiv signed division. @@ -556,6 +557,7 @@ call,\ clz,\ no_insn,\ + prefetch,\ csel,\ crc,\
