File: known-never-nan.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-6~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,418,812 kB
  • sloc: cpp: 5,290,827; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,900; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,892; xml: 953; cs: 573; fortran: 539
file content (25 lines) | stat: -rw-r--r-- 1,162 bytes parent folder | download | duplicates (11)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=fiji -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN %s

define half @known_nnan_extract_vector_elt(float %a, float %b, i32 %idx, half %c) {
; GCN-LABEL: known_nnan_extract_vector_elt:
; GCN:       ; %bb.0:
; GCN-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GCN-NEXT:    v_cvt_pkrtz_f16_f32 v0, v0, v1
; GCN-NEXT:    v_lshlrev_b32_e32 v1, 4, v2
; GCN-NEXT:    v_lshrrev_b32_e32 v0, v1, v0
; GCN-NEXT:    v_add_f16_e32 v1, 1.0, v3
; GCN-NEXT:    v_cmp_lt_f16_e32 vcc, v0, v1
; GCN-NEXT:    v_cndmask_b32_e32 v0, v1, v0, vcc
; GCN-NEXT:    s_setpc_b64 s[30:31]
  %cvt = call nnan <2 x half> @llvm.amdgcn.cvt.pkrtz(float %a, float %b)
  %extract = extractelement <2 x half> %cvt, i32 %idx
  %canon = call half @llvm.canonicalize.f16(half %extract)
  %nnan.c = fadd nnan nsz half %c, 1.0
  %cmp = fcmp olt half %extract, %nnan.c
  %select = select i1 %cmp, half %extract, half %nnan.c
  ret half %select
}

declare <2 x half> @llvm.amdgcn.cvt.pkrtz(float, float) #0
declare half @llvm.canonicalize.f16(half) #0