1*030b8cb1SEduard Zingerman; RUN: opt --bpf-check-and-opt-ir -mtriple=bpf-pc-linux -S -o - %s | FileCheck %s 2*030b8cb1SEduard Zingerman; 3*030b8cb1SEduard Zingerman; Check that getelementptr.and.load unroll restores alignment spec. 4*030b8cb1SEduard Zingerman; 5*030b8cb1SEduard Zingerman; Source: 6*030b8cb1SEduard Zingerman; #define __ctx __attribute__((preserve_static_offset)) 7*030b8cb1SEduard Zingerman; 8*030b8cb1SEduard Zingerman; typedef int aligned_int __attribute__((aligned(128))); 9*030b8cb1SEduard Zingerman; 10*030b8cb1SEduard Zingerman; struct foo { 11*030b8cb1SEduard Zingerman; int _; 12*030b8cb1SEduard Zingerman; aligned_int a; 13*030b8cb1SEduard Zingerman; } __ctx; 14*030b8cb1SEduard Zingerman; 15*030b8cb1SEduard Zingerman; extern void consume(int); 16*030b8cb1SEduard Zingerman; 17*030b8cb1SEduard Zingerman; void bar(struct foo *p) { 18*030b8cb1SEduard Zingerman; consume(p->a); 19*030b8cb1SEduard Zingerman; } 20*030b8cb1SEduard Zingerman; 21*030b8cb1SEduard Zingerman; Compilation flag: 22*030b8cb1SEduard Zingerman; clang -cc1 -O2 -triple bpf -S -emit-llvm -disable-llvm-passes -o - \ 23*030b8cb1SEduard Zingerman; | opt -passes=sroa,bpf-preserve-static-offset -S -o - 24*030b8cb1SEduard Zingerman 25*030b8cb1SEduard Zingerman%struct.foo = type { i32, [124 x i8], i32, [124 x i8] } 26*030b8cb1SEduard Zingerman 27*030b8cb1SEduard Zingerman; Function Attrs: nounwind 28*030b8cb1SEduard Zingermandefine dso_local void @bar(ptr noundef %p) #0 { 29*030b8cb1SEduard Zingermanentry: 30*030b8cb1SEduard Zingerman %a1 = call i32 (ptr, i1, i8, i8, i8, i1, ...) 31*030b8cb1SEduard Zingerman @llvm.bpf.getelementptr.and.load.i32 32*030b8cb1SEduard Zingerman (ptr readonly elementtype(%struct.foo) %p, 33*030b8cb1SEduard Zingerman i1 false, i8 0, i8 1, i8 7, i1 true, i32 immarg 0, i32 immarg 2) 34*030b8cb1SEduard Zingerman #4, !tbaa !2 35*030b8cb1SEduard Zingerman call void @consume(i32 noundef %a1) 36*030b8cb1SEduard Zingerman ret void 37*030b8cb1SEduard Zingerman} 38*030b8cb1SEduard Zingerman 39*030b8cb1SEduard Zingerman; CHECK: define dso_local void @bar(ptr noundef %[[p:.*]]) 40*030b8cb1SEduard Zingerman; CHECK: %[[a11:.*]] = getelementptr inbounds %struct.foo, ptr %[[p]], i32 0, i32 2 41*030b8cb1SEduard Zingerman; CHECK: %[[v2:.*]] = load i32, ptr %[[a11]], align 128 42*030b8cb1SEduard Zingerman; CHECK: call void @consume(i32 noundef %[[v2]]) 43*030b8cb1SEduard Zingerman 44*030b8cb1SEduard Zingermandeclare void @consume(i32 noundef) #1 45*030b8cb1SEduard Zingerman 46*030b8cb1SEduard Zingerman; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none) 47*030b8cb1SEduard Zingermandeclare ptr @llvm.preserve.static.offset(ptr readnone) #2 48*030b8cb1SEduard Zingerman 49*030b8cb1SEduard Zingerman; Function Attrs: nocallback nofree nounwind willreturn 50*030b8cb1SEduard Zingermandeclare i32 @llvm.bpf.getelementptr.and.load.i32(ptr nocapture, i1 immarg, i8 immarg, i8 immarg, i8 immarg, i1 immarg, ...) #3 51*030b8cb1SEduard Zingerman 52*030b8cb1SEduard Zingermanattributes #0 = { nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 53*030b8cb1SEduard Zingermanattributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 54*030b8cb1SEduard Zingermanattributes #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) } 55*030b8cb1SEduard Zingermanattributes #3 = { nocallback nofree nounwind willreturn } 56*030b8cb1SEduard Zingermanattributes #4 = { memory(argmem: read) } 57*030b8cb1SEduard Zingerman 58*030b8cb1SEduard Zingerman!llvm.module.flags = !{!0} 59*030b8cb1SEduard Zingerman!llvm.ident = !{!1} 60*030b8cb1SEduard Zingerman 61*030b8cb1SEduard Zingerman!0 = !{i32 1, !"wchar_size", i32 4} 62*030b8cb1SEduard Zingerman!1 = !{!"clang"} 63*030b8cb1SEduard Zingerman!2 = !{!3, !4, i64 128} 64*030b8cb1SEduard Zingerman!3 = !{!"foo", !4, i64 0, !4, i64 128} 65*030b8cb1SEduard Zingerman!4 = !{!"int", !5, i64 0} 66*030b8cb1SEduard Zingerman!5 = !{!"omnipotent char", !6, i64 0} 67*030b8cb1SEduard Zingerman!6 = !{!"Simple C/C++ TBAA"} 68