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1; RUN: opt --bpf-check-and-opt-ir -mtriple=bpf-pc-linux -S -o - %s | FileCheck %s2;3; Check unroll of getelementptr.and.store when several field indexes4; are specified in a chain.5;6; Source:7; #define __ctx __attribute__((preserve_static_offset))8; 9; struct bar {10; int aa;11; int bb;12; };13; 14; struct foo {15; int a;16; struct bar b;17; } __ctx;18; 19; void buz(struct foo *p) {20; p->b.bb = 42;21; }22;23; Compilation flag:24; clang -cc1 -O2 -triple bpf -S -emit-llvm -disable-llvm-passes -o - \25; | opt -passes=sroa,bpf-preserve-static-offset -S -o -26 27%struct.foo = type { i32, %struct.bar }28%struct.bar = type { i32, i32 }29 30; Function Attrs: nounwind31define dso_local void @buz(ptr noundef %p) #0 {32entry:33 call void (i32, ptr, i1, i8, i8, i8, i1, ...)34 @llvm.bpf.getelementptr.and.store.i3235 (i32 42,36 ptr writeonly elementtype(%struct.foo) %p,37 i1 false, i8 0, i8 1, i8 2, i1 true, i32 immarg 0, i32 immarg 1, i32 immarg 1)38 #3, !tbaa !239 ret void40}41 42; CHECK: define dso_local void @buz(ptr noundef %[[p:.*]])43; CHECK: %[[v2:.*]] = getelementptr inbounds %struct.foo, ptr %[[p]], i32 0, i32 1, i32 144; CHECK: store i32 42, ptr %[[v2]], align 445; CHECK: ret void46 47; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)48declare ptr @llvm.preserve.static.offset(ptr readnone) #149 50; Function Attrs: nocallback nofree nounwind willreturn51declare void @llvm.bpf.getelementptr.and.store.i32(i32, ptr nocapture, i1 immarg, i8 immarg, i8 immarg, i8 immarg, i1 immarg, ...) #252 53attributes #0 = { nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" }54attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }55attributes #2 = { nocallback nofree nounwind willreturn }56attributes #3 = { memory(argmem: write) }57 58!llvm.module.flags = !{!0}59!llvm.ident = !{!1}60 61!0 = !{i32 1, !"wchar_size", i32 4}62!1 = !{!"clang"}63!2 = !{!3, !4, i64 8}64!3 = !{!"foo", !4, i64 0, !7, i64 4}65!4 = !{!"int", !5, i64 0}66!5 = !{!"omnipotent char", !6, i64 0}67!6 = !{!"Simple C/C++ TBAA"}68!7 = !{!"bar", !4, i64 0, !4, i64 4}69