| ; RUN: opt -O2 -S -mtriple=bpf-pc-linux %s -o %t1 |
| ; RUN: llc %t1 -o - | FileCheck -check-prefixes=CHECK,CHECK-V1 %s |
| ; RUN: opt -O2 -S -mtriple=bpf-pc-linux %s -o %t1 |
| ; RUN: llc %t1 -mcpu=v3 -o - | FileCheck -check-prefixes=CHECK,CHECK-V3 %s |
| ; |
| ; Source: |
| ; unsigned bar(unsigned); |
| ; unsigned int test(unsigned *p) { |
| ; if (*p <= 1 || *p >= 7) |
| ; return 0; |
| ; return bar(*p); |
| ; } |
| ; Compilation flag: |
| ; clang -target bpf -O2 -S -emit-llvm -Xclang -disable-llvm-passes test.c |
| |
| ; Function Attrs: nounwind |
| define dso_local i32 @test(ptr noundef %p) #0 { |
| entry: |
| %retval = alloca i32, align 4 |
| %p.addr = alloca ptr, align 8 |
| store ptr %p, ptr %p.addr, align 8, !tbaa !3 |
| %0 = load ptr, ptr %p.addr, align 8, !tbaa !3 |
| %1 = load i32, ptr %0, align 4, !tbaa !7 |
| %cmp = icmp ule i32 %1, 1 |
| br i1 %cmp, label %if.then, label %lor.lhs.false |
| |
| lor.lhs.false: ; preds = %entry |
| %2 = load ptr, ptr %p.addr, align 8, !tbaa !3 |
| %3 = load i32, ptr %2, align 4, !tbaa !7 |
| %cmp1 = icmp uge i32 %3, 7 |
| br i1 %cmp1, label %if.then, label %if.end |
| |
| if.then: ; preds = %lor.lhs.false, %entry |
| store i32 0, ptr %retval, align 4 |
| br label %return |
| |
| if.end: ; preds = %lor.lhs.false |
| %4 = load ptr, ptr %p.addr, align 8, !tbaa !3 |
| %5 = load i32, ptr %4, align 4, !tbaa !7 |
| %call = call i32 @bar(i32 noundef %5) |
| store i32 %call, ptr %retval, align 4 |
| br label %return |
| |
| return: ; preds = %if.end, %if.then |
| %6 = load i32, ptr %retval, align 4 |
| ret i32 %6 |
| } |
| |
| ; CHECK-LABEL: test |
| ; CHECK-V1: if r[[#]] > r[[#]] goto |
| ; CHECK-V1: if r[[#]] > 6 goto |
| ; CHECK-V3: if w[[#]] < 2 goto |
| ; CHECK-V3: if w[[#]] > 6 goto |
| |
| declare dso_local i32 @bar(i32 noundef) #1 |
| |
| attributes #0 = { nounwind "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } |
| attributes #1 = { "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } |
| |
| !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 15.0.0 (https://github.com/llvm/llvm-project.git 2a25e1af85f3138f70888c4c3f359c6a09e3cfe5)"} |
| !3 = !{!4, !4, i64 0} |
| !4 = !{!"any pointer", !5, i64 0} |
| !5 = !{!"omnipotent char", !6, i64 0} |
| !6 = !{!"Simple C/C++ TBAA"} |
| !7 = !{!8, !8, i64 0} |
| !8 = !{!"int", !5, i64 0} |