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
32
33
34
35
36
37
38
39
40
41
42
43
44
|
; RUN: llc -march=bpfel -mcpu=v4 -verify-machineinstrs -show-mc-encoding < %s | FileCheck %s
; Source:
; int foo(int a, int b, int c) {
; return a/b + a%c;
; }
; long bar(long a, long b, long c) {
; return a/b + a%c;
; }
; Compilation flags:
; clang -target bpf -O2 -S -emit-llvm t.c
; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
define dso_local i32 @foo(i32 noundef %a, i32 noundef %b, i32 noundef %c) local_unnamed_addr #0 {
entry:
%div = sdiv i32 %a, %b
%rem = srem i32 %a, %c
%add = add nsw i32 %rem, %div
ret i32 %add
}
; CHECK: w0 = w1
; CHECK-NEXT: w1 s/= w2 # encoding: [0x3c,0x21,0x01,0x00,0x00,0x00,0x00,0x00]
; CHECK-NEXT: w0 s%= w3 # encoding: [0x9c,0x30,0x01,0x00,0x00,0x00,0x00,0x00]
; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
define dso_local i64 @bar(i64 noundef %a, i64 noundef %b, i64 noundef %c) local_unnamed_addr #0 {
entry:
%div = sdiv i64 %a, %b
%rem = srem i64 %a, %c
%add = add nsw i64 %rem, %div
ret i64 %add
}
; CHECK: r0 = r1
; CHECK-NEXT: r1 s/= r2 # encoding: [0x3f,0x21,0x01,0x00,0x00,0x00,0x00,0x00]
; CHECK-NEXT: r0 s%= r3 # encoding: [0x9f,0x30,0x01,0x00,0x00,0x00,0x00,0x00]
attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
!llvm.module.flags = !{!0, !1}
!llvm.ident = !{!2}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 7, !"frame-pointer", i32 2}
!2 = !{!"clang version 17.0.0 (https://github.com/llvm/llvm-project.git c102025a4299e74767cdb4dfba8abbf6cbad820b)"}
|
