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[AArch64] Implement __jcvt intrinsic from Armv8.3-A

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The jcvt intrinsic defined in ACLE [1] is available when ARM_FEATURE_JCVT is defined.

This change introduces the AArch64 intrinsic, wires it up to the instruction and a new clang builtin function.
The __ARM_FEATURE_JCVT macro is now defined when an Armv8.3-A or higher target is used.
I've implemented the target detection logic in Clang so that this feature is enabled for architectures from armv8.3-a onwards (so -march=armv8.4-a also enables this, for example).

make check-all didn't show any new failures.

[1] https://developer.arm.com/docs/101028/latest/data-processing-intrinsics

Differential Revision: https://reviews.llvm.org/D64495

llvm-svn: 366197
This commit is contained in:
Kyrylo Tkachov 2019-07-16 09:27:39 +00:00
parent 4209e96014
commit c4056176b9
4 changed files with 16 additions and 2 deletions
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2
include/llvm/IR/IntrinsicsAArch64.td
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@ -31,6 +31,8 @@ def int_aarch64_sdiv : Intrinsic<[llvm_anyint_ty], [LLVMMatchType<0>,
def int_aarch64_udiv : Intrinsic<[llvm_anyint_ty], [LLVMMatchType<0>,
LLVMMatchType<0>], [IntrNoMem]>;
def int_aarch64_fjcvtzs : Intrinsic<[llvm_i32_ty], [llvm_double_ty], [IntrNoMem]>;
//===----------------------------------------------------------------------===//
// HINT

4
lib/Target/AArch64/AArch64InstrInfo.td
View File

@ -717,7 +717,9 @@ let Predicates = [HasPA] in {
// v8.3a floating point conversion for javascript
let Predicates = [HasJS, HasFPARMv8] in
def FJCVTZS : BaseFPToIntegerUnscaled<0b01, 0b11, 0b110, FPR64, GPR32,
"fjcvtzs", []> {
"fjcvtzs",
[(set GPR32:$Rd,
(int_aarch64_fjcvtzs FPR64:$Rn))]> {
let Inst{31} = 0;
} // HasJS, HasFPARMv8

10
test/CodeGen/AArch64/fjcvtzs.ll Normal file
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@ -0,0 +1,10 @@
; RUN: llc -mtriple=arm64-eabi -mattr=+jsconv -o - %s | FileCheck %s
define i32 @test_jcvt(double %v) {
; CHECK-LABEL: test_jcvt:
; CHECK: fjcvtzs w0, d0
%val = call i32 @llvm.aarch64.fjcvtzs(double %v)
ret i32 %val
}
declare i32 @llvm.aarch64.fjcvtzs(double)

2
utils/git-svn/git-llvm
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@ -372,7 +372,7 @@ def svn_push_one_rev(svn_repo, rev, git_to_svn_mapping, dry_run):
# Now we're ready to commit.
commit_msg = git('show', '--pretty=%B', '--quiet', rev)
if not dry_run:
commit_args = ['commit', '-m', commit_msg]
commit_args = ['commit', '-m', commit_msg, '--username', 'ktkachov']
if '--force-interactive' in svn(svn_repo, 'commit', '--help'):
commit_args.append('--force-interactive')
log(svn(svn_repo, *commit_args))