mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-26 12:43:36 +01:00
2d913ae276
Summary: This adds the unpredicated forms of six different MVE intrinsics which all round a vector of floating-point numbers to integer values, leaving them still in FP format, differing only in rounding mode and exception settings. Five of them map to existing target-independent intrinsics in LLVM IR, such as @llvm.trunc and @llvm.rint. The sixth, mapping to the `vrintn` instruction, is done by inventing a target-specific intrinsic. (`vrintn` behaves the same as `vrintx` in terms of the output value: the side effects on the FPSCR flags are the only difference between the two. But ACLE specifies separate user-callable intrinsics for the two, so the side effects matter enough to make sure we generate the right one of the two instructions in each case.) Reviewers: dmgreen, miyuki, MarkMurrayARM, ostannard Reviewed By: miyuki Subscribers: kristof.beyls, hiraditya, cfe-commits, llvm-commits Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D74333
26 lines
880 B
LLVM
26 lines
880 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve.fp -verify-machineinstrs -o - %s | FileCheck %s
|
|
|
|
define arm_aapcs_vfpcc <8 x half> @test_vrndnq_f16(<8 x half> %a) {
|
|
; CHECK-LABEL: test_vrndnq_f16:
|
|
; CHECK: @ %bb.0: @ %entry
|
|
; CHECK-NEXT: vrintn.f16 q0, q0
|
|
; CHECK-NEXT: bx lr
|
|
entry:
|
|
%0 = tail call <8 x half> @llvm.arm.mve.vrintn.v8f16(<8 x half> %a)
|
|
ret <8 x half> %0
|
|
}
|
|
|
|
define arm_aapcs_vfpcc <4 x float> @test_vrndnq_f32(<4 x float> %a) {
|
|
; CHECK-LABEL: test_vrndnq_f32:
|
|
; CHECK: @ %bb.0: @ %entry
|
|
; CHECK-NEXT: vrintn.f32 q0, q0
|
|
; CHECK-NEXT: bx lr
|
|
entry:
|
|
%0 = tail call <4 x float> @llvm.arm.mve.vrintn.v4f32(<4 x float> %a)
|
|
ret <4 x float> %0
|
|
}
|
|
|
|
declare <8 x half> @llvm.arm.mve.vrintn.v8f16(<8 x half>)
|
|
declare <4 x float> @llvm.arm.mve.vrintn.v4f32(<4 x float>)
|