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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2019-06-24 16:54:22 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2019-06-24 16:54:22 +0000 |
| commit | 2b92d5c69b4e4ffd89e6bfe928ea2cc2114357a8 (patch) | |
| tree | 318ef6fa71679125858dacabc9a1992333294ccc /gcc | |
| parent | 1e3d475ea16e89332e07651d61b60b408e0a0932 (diff) | |
| download | gcc-2b92d5c69b4e4ffd89e6bfe928ea2cc2114357a8.zip gcc-2b92d5c69b4e4ffd89e6bfe928ea2cc2114357a8.tar.gz gcc-2b92d5c69b4e4ffd89e6bfe928ea2cc2114357a8.tar.bz2 | |
compiler: use builtin memcmp directly
Instead of going through a C function __go_memcmp, we can just
use __builtin_memcmp directly. This allows more optimizations in
the compiler backend.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/183537
From-SVN: r272620
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/go/gofrontend/MERGE | 2 | ||||
| -rw-r--r-- | gcc/go/gofrontend/expressions.cc | 3 | ||||
| -rw-r--r-- | gcc/go/gofrontend/runtime.def | 2 |
3 files changed, 4 insertions, 3 deletions
diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE index 92d863e..89d401b 100644 --- a/gcc/go/gofrontend/MERGE +++ b/gcc/go/gofrontend/MERGE @@ -1,4 +1,4 @@ -1232eef628227ef855c5fa6d94b31778b2e74a85 +338e4baf88a4ae676205dff601dbef2d31b19d2d The first line of this file holds the git revision number of the last merge done from the gofrontend repository. diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc index c9d8ea2..050da32 100644 --- a/gcc/go/gofrontend/expressions.cc +++ b/gcc/go/gofrontend/expressions.cc @@ -6199,7 +6199,8 @@ Binary_expression::lower_compare_to_memcmp(Gogo*, Statement_inserter* inserter) TYPE_INFO_SIZE); Expression* call = Runtime::make_call(Runtime::MEMCMP, loc, 3, a1, a2, len); - Expression* zero = Expression::make_integer_ul(0, NULL, loc); + Type* int32_type = Type::lookup_integer_type("int32"); + Expression* zero = Expression::make_integer_ul(0, int32_type, loc); return Expression::make_binary(this->op_, call, zero, loc); } diff --git a/gcc/go/gofrontend/runtime.def b/gcc/go/gofrontend/runtime.def index 27d5e47..7b66b16 100644 --- a/gcc/go/gofrontend/runtime.def +++ b/gcc/go/gofrontend/runtime.def @@ -29,7 +29,7 @@ // result types. // The standard C memcmp function, used for struct comparisons. -DEF_GO_RUNTIME(MEMCMP, "__go_memcmp", P3(POINTER, POINTER, UINTPTR), R1(INT)) +DEF_GO_RUNTIME(MEMCMP, "__builtin_memcmp", P3(POINTER, POINTER, UINTPTR), R1(INT32)) // Decode a non-ASCII rune from a string. DEF_GO_RUNTIME(DECODERUNE, "runtime.decoderune", P2(STRING, INT), |