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; RUN: llc < %s -march=bpfel -mattr=+alu32 -verify-machineinstrs | FileCheck %s
; RUN: llc < %s -march=bpfeb -mattr=+alu32 -verify-machineinstrs | FileCheck %s
;
; Source Code:
; struct t {
; unsigned char a;
; unsigned char b;
; unsigned char c;
; };
; extern void foo(void *);
; int test() {
; struct t v = {
; .b = 2,
; };
; foo(&v);
; return 0;
; }
; Compilation flag:
; clang -target bpf -O2 -S -emit-llvm t.c
%struct.t = type { i8, i8, i8 }
@__const.test.v = private unnamed_addr constant %struct.t { i8 0, i8 2, i8 0 }, align 1
; Function Attrs: nounwind
define dso_local i32 @test() local_unnamed_addr {
entry:
%v1 = alloca [3 x i8], align 1
%v1.sub = getelementptr inbounds [3 x i8], [3 x i8]* %v1, i64 0, i64 0
call void @llvm.lifetime.start.p0i8(i64 3, i8* nonnull %v1.sub)
call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 1 dereferenceable(3) %v1.sub, i8* nonnull align 1 dereferenceable(3) getelementptr inbounds (%struct.t, %struct.t* @__const.test.v, i64 0, i32 0), i64 3, i1 false)
call void @foo(i8* nonnull %v1.sub)
call void @llvm.lifetime.end.p0i8(i64 3, i8* nonnull %v1.sub)
ret i32 0
}
; CHECK-NOT: w{{[0-9]+}} = *(u16 *)
; CHECK-NOT: w{{[0-9]+}} = *(u8 *)
; CHECK: *(u16 *)(r10 - 4) = w{{[0-9]+}}
; CHECK: *(u8 *)(r10 - 2) = w{{[0-9]+}}
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg)
declare dso_local void @foo(i8*) local_unnamed_addr
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
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