File: rdtsc-upgrade.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (31 lines) | stat: -rw-r--r-- 996 bytes parent folder | download | duplicates (15) 
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
26
27
28
29
30
31
 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown-unknown -mcpu=generic | FileCheck %s --check-prefix=X86
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=generic | FileCheck %s --check-prefix=X64

; Verify upgrading of the old form of the rdtscp intrinsic.

define i64 @test_builtin_rdtscp(ptr %A) {
; X86-LABEL: test_builtin_rdtscp:
; X86:       # %bb.0:
; X86-NEXT:    pushl %esi
; X86-NEXT:    .cfi_def_cfa_offset 8
; X86-NEXT:    .cfi_offset %esi, -8
; X86-NEXT:    movl {{[0-9]+}}(%esp), %esi
; X86-NEXT:    rdtscp
; X86-NEXT:    movl %ecx, (%esi)
; X86-NEXT:    popl %esi
; X86-NEXT:    .cfi_def_cfa_offset 4
; X86-NEXT:    retl
;
; X64-LABEL: test_builtin_rdtscp:
; X64:       # %bb.0:
; X64-NEXT:    rdtscp
; X64-NEXT:    shlq $32, %rdx
; X64-NEXT:    orq %rdx, %rax
; X64-NEXT:    movl %ecx, (%rdi)
; X64-NEXT:    retq
  %1 = tail call i64 @llvm.x86.rdtscp(ptr %A)
  ret i64 %1
}

declare i64 @llvm.x86.rdtscp(ptr)