forked from OSchip/llvm-project
100 lines
3.5 KiB
LLVM
100 lines
3.5 KiB
LLVM
; RUN: llc < %s -march=bpfel -show-mc-encoding | FileCheck --check-prefix=CHECK-EL %s
|
|
; RUN: llc < %s -march=bpfeb -show-mc-encoding | FileCheck --check-prefix=CHECK-EB %s
|
|
|
|
; Function Attrs: nounwind uwtable
|
|
define i32 @ld_b(i64 %foo, i64* nocapture %bar, i8* %ctx, i8* %ctx2) #0 {
|
|
%1 = tail call i64 @llvm.bpf.load.byte(i8* %ctx, i64 123) #2
|
|
%2 = add i64 %1, %foo
|
|
%3 = load volatile i64, i64* %bar, align 8
|
|
%4 = add i64 %2, %3
|
|
%5 = tail call i64 @llvm.bpf.load.byte(i8* %ctx2, i64 %foo) #2
|
|
%6 = add i64 %4, %5
|
|
%7 = load volatile i64, i64* %bar, align 8
|
|
%8 = add i64 %6, %7
|
|
%9 = trunc i64 %8 to i32
|
|
ret i32 %9
|
|
; CHECK-LABEL: ld_b:
|
|
; CHECK-EL: r0 = *(u8 *)skb[123]
|
|
; CHECK-EL: r0 = *(u8 *)skb[r
|
|
; CHECK-EB: r0 = *(u8 *)skb[123]
|
|
; CHECK-EB: r0 = *(u8 *)skb[r
|
|
}
|
|
|
|
declare i64 @llvm.bpf.load.byte(i8*, i64) #1
|
|
|
|
; Function Attrs: nounwind uwtable
|
|
define i32 @ld_h(i8* %ctx, i8* %ctx2, i32 %foo) #0 {
|
|
%1 = tail call i64 @llvm.bpf.load.half(i8* %ctx, i64 123) #2
|
|
%2 = sext i32 %foo to i64
|
|
%3 = tail call i64 @llvm.bpf.load.half(i8* %ctx2, i64 %2) #2
|
|
%4 = add i64 %3, %1
|
|
%5 = trunc i64 %4 to i32
|
|
ret i32 %5
|
|
; CHECK-LABEL: ld_h:
|
|
; CHECK-EL: r0 = *(u16 *)skb[r
|
|
; CHECK-EL: r0 = *(u16 *)skb[123]
|
|
; CHECK-EB: r0 = *(u16 *)skb[r
|
|
; CHECK-EB: r0 = *(u16 *)skb[123]
|
|
}
|
|
|
|
declare i64 @llvm.bpf.load.half(i8*, i64) #1
|
|
|
|
; Function Attrs: nounwind uwtable
|
|
define i32 @ld_w(i8* %ctx, i8* %ctx2, i32 %foo) #0 {
|
|
%1 = tail call i64 @llvm.bpf.load.word(i8* %ctx, i64 123) #2
|
|
%2 = sext i32 %foo to i64
|
|
%3 = tail call i64 @llvm.bpf.load.word(i8* %ctx2, i64 %2) #2
|
|
%4 = add i64 %3, %1
|
|
%5 = trunc i64 %4 to i32
|
|
ret i32 %5
|
|
; CHECK-LABEL: ld_w:
|
|
; CHECK-EL: r0 = *(u32 *)skb[r
|
|
; CHECK-EL: r0 = *(u32 *)skb[123]
|
|
; CHECK-EB: r0 = *(u32 *)skb[r
|
|
; CHECK-EB: r0 = *(u32 *)skb[123]
|
|
}
|
|
|
|
declare i64 @llvm.bpf.load.word(i8*, i64) #1
|
|
|
|
define i32 @ld_pseudo() #0 {
|
|
entry:
|
|
%call = tail call i64 @llvm.bpf.pseudo(i64 2, i64 3)
|
|
tail call void inttoptr (i64 4 to void (i64, i32)*)(i64 %call, i32 4) #2
|
|
ret i32 0
|
|
; CHECK-LABEL: ld_pseudo:
|
|
; CHECK-EL: ld_pseudo r1, 2, 3 # encoding: [0x18,0x21,0x00,0x00,0x03,0x00,0x00,0x00
|
|
; CHECK-EB: ld_pseudo r1, 2, 3 # encoding: [0x18,0x12,0x00,0x00,0x00,0x00,0x00,0x03
|
|
}
|
|
|
|
declare i64 @llvm.bpf.pseudo(i64, i64) #2
|
|
|
|
define i32 @bswap(i64 %a, i64 %b, i64 %c) #0 {
|
|
entry:
|
|
%0 = tail call i64 @llvm.bswap.i64(i64 %a)
|
|
%conv = trunc i64 %b to i32
|
|
%1 = tail call i32 @llvm.bswap.i32(i32 %conv)
|
|
%conv1 = zext i32 %1 to i64
|
|
%add = add i64 %conv1, %0
|
|
%conv2 = trunc i64 %c to i16
|
|
%2 = tail call i16 @llvm.bswap.i16(i16 %conv2)
|
|
%conv3 = zext i16 %2 to i64
|
|
%add4 = add i64 %add, %conv3
|
|
%conv5 = trunc i64 %add4 to i32
|
|
ret i32 %conv5
|
|
; CHECK-LABEL: bswap:
|
|
; CHECK-EL: r1 = be64 r1 # encoding: [0xdc,0x01,0x00,0x00,0x40,0x00,0x00,0x00]
|
|
; CHECK-EL: r2 = be32 r2 # encoding: [0xdc,0x02,0x00,0x00,0x20,0x00,0x00,0x00]
|
|
; CHECK-EL: r2 += r1 # encoding: [0x0f,0x12,0x00,0x00,0x00,0x00,0x00,0x00]
|
|
; CHECK-EL: r3 = be16 r3 # encoding: [0xdc,0x03,0x00,0x00,0x10,0x00,0x00,0x00]
|
|
; CHECK-EL: r2 += r3 # encoding: [0x0f,0x32,0x00,0x00,0x00,0x00,0x00,0x00]
|
|
; CHECK-EB: r1 = le64 r1 # encoding: [0xd4,0x10,0x00,0x00,0x00,0x00,0x00,0x40]
|
|
; CHECK-EB: r2 = le32 r2 # encoding: [0xd4,0x20,0x00,0x00,0x00,0x00,0x00,0x20]
|
|
; CHECK-EB: r2 += r1 # encoding: [0x0f,0x21,0x00,0x00,0x00,0x00,0x00,0x00]
|
|
; CHECK-EB: r3 = le16 r3 # encoding: [0xd4,0x30,0x00,0x00,0x00,0x00,0x00,0x10]
|
|
; CHECK-EB: r2 += r3 # encoding: [0x0f,0x23,0x00,0x00,0x00,0x00,0x00,0x00]
|
|
}
|
|
|
|
declare i64 @llvm.bswap.i64(i64) #1
|
|
declare i32 @llvm.bswap.i32(i32) #1
|
|
declare i16 @llvm.bswap.i16(i16) #1
|