1; RUN: opt --bpf-check-and-opt-ir -mtriple=bpf-pc-linux -S -o - %s | FileCheck %s 2; 3; Check that getelementptr.and.load unroll can skip 'inbounds' flag. 4; 5; Source: 6; #define __ctx __attribute__((preserve_static_offset)) 7; 8; struct bar { 9; int aa; 10; int bb; 11; }; 12; 13; struct foo { 14; int a; 15; struct bar b; 16; } __ctx; 17; 18; void buz(struct foo *p) { 19; p->b.bb = 42; 20; } 21; 22; Compilation flag: 23; clang -cc1 -O2 -triple bpf -S -emit-llvm -disable-llvm-passes -o - \ 24; | opt -passes=sroa,bpf-preserve-static-offset -S -o - 25 26%struct.foo = type { i32, %struct.bar } 27%struct.bar = type { i32, i32 } 28 29; Function Attrs: nounwind 30define dso_local void @buz(ptr noundef %p) #0 { 31entry: 32 call void (i32, ptr, i1, i8, i8, i8, i1, ...) 33 @llvm.bpf.getelementptr.and.store.i32 34 (i32 42, 35 ptr writeonly elementtype(%struct.foo) %p, 36 i1 false, i8 0, i8 1, i8 2, i1 false, i32 immarg 0, i32 immarg 1, i32 immarg 1) 37 #3, !tbaa !2 38 ret void 39} 40 41; CHECK: define dso_local void @buz(ptr noundef %[[p:.*]]) 42; CHECK: %[[v2:.*]] = getelementptr %struct.foo, ptr %[[p]], i32 0, i32 1, i32 1 43; CHECK: store i32 42, ptr %[[v2]], align 4 44; CHECK: ret void 45 46; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none) 47declare ptr @llvm.preserve.static.offset(ptr readnone) #1 48 49; Function Attrs: nocallback nofree nounwind willreturn 50declare void @llvm.bpf.getelementptr.and.store.i32(i32, ptr nocapture, i1 immarg, i8 immarg, i8 immarg, i8 immarg, i1 immarg, ...) #2 51 52attributes #0 = { nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 53attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) } 54attributes #2 = { nocallback nofree nounwind willreturn } 55attributes #3 = { memory(argmem: write) } 56 57!llvm.module.flags = !{!0} 58!llvm.ident = !{!1} 59 60!0 = !{i32 1, !"wchar_size", i32 4} 61!1 = !{!"clang"} 62!2 = !{!3, !4, i64 8} 63!3 = !{!"foo", !4, i64 0, !7, i64 4} 64!4 = !{!"int", !5, i64 0} 65!5 = !{!"omnipotent char", !6, i64 0} 66!6 = !{!"Simple C/C++ TBAA"} 67!7 = !{!"bar", !4, i64 0, !4, i64 4} 68