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; RUN: llc -mtriple=bpfel -mcpu=v4 -verify-machineinstrs -show-mc-encoding < %s | FileCheck %s
; Source:
; long foo(int a, int b, long c) {
; a = __builtin_bswap16(a);
; b = __builtin_bswap32(b);
; c = __builtin_bswap64(c);
; return a + b + c;
; }
; Compilation flags:
; clang -target bpf -O2 -S -emit-llvm t.c
; Function Attrs: mustprogress nofree nosync nounwind willreturn memory(none)
define dso_local i64 @foo(i32 noundef %a, i32 noundef %b, i64 noundef %c) local_unnamed_addr #0 {
entry:
%conv = trunc i32 %a to i16
%0 = tail call i16 @llvm.bswap.i16(i16 %conv)
%conv1 = zext i16 %0 to i32
%1 = tail call i32 @llvm.bswap.i32(i32 %b)
%2 = tail call i64 @llvm.bswap.i64(i64 %c)
%add = add nsw i32 %1, %conv1
%conv2 = sext i32 %add to i64
%add3 = add nsw i64 %2, %conv2
ret i64 %add3
}
; CHECK: r1 = bswap16 r1 # encoding: [0xd7,0x01,0x00,0x00,0x10,0x00,0x00,0x00]
; CHECK: r2 = bswap32 r2 # encoding: [0xd7,0x02,0x00,0x00,0x20,0x00,0x00,0x00]
; CHECK: r0 = bswap64 r0 # encoding: [0xd7,0x00,0x00,0x00,0x40,0x00,0x00,0x00]
; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i16 @llvm.bswap.i16(i16) #1
; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.bswap.i32(i32) #1
; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.bswap.i64(i64) #1
attributes #0 = { mustprogress nofree nosync nounwind willreturn memory(none) "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
!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 a2913a8a2bfe572d2f1bfea950ab9b0848373648)"}
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