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; 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:
; int bar(int);
; int test(int *p) {
; if (*p <= 0 || *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(i32* noundef %p) #0 {
entry:
%retval = alloca i32, align 4
%p.addr = alloca i32*, align 8
store i32* %p, i32** %p.addr, align 8, !tbaa !3
%0 = load i32*, i32** %p.addr, align 8, !tbaa !3
%1 = load i32, i32* %0, align 4, !tbaa !7
%cmp = icmp sle i32 %1, 0
br i1 %cmp, label %if.then, label %lor.lhs.false
lor.lhs.false: ; preds = %entry
%2 = load i32*, i32** %p.addr, align 8, !tbaa !3
%3 = load i32, i32* %2, align 4, !tbaa !7
%cmp1 = icmp sge i32 %3, 7
br i1 %cmp1, label %if.then, label %if.end
if.then: ; preds = %lor.lhs.false, %entry
store i32 0, i32* %retval, align 4
br label %return
if.end: ; preds = %lor.lhs.false
%4 = load i32*, i32** %p.addr, align 8, !tbaa !3
%5 = load i32, i32* %4, align 4, !tbaa !7
%call = call i32 @bar(i32 noundef %5)
store i32 %call, i32* %retval, align 4
br label %return
return: ; preds = %if.end, %if.then
%6 = load i32, i32* %retval, align 4
ret i32 %6
}
; CHECK-LABEL: test
; CHECK-V1: if r[[#]] s> r[[#]] goto
; CHECK-V1: if r[[#]] s> 6 goto
; CHECK-V3: if w[[#]] s< 1 goto
; CHECK-V3: if w[[#]] s> 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 0d37a76d31c05372908908ff2f01fc58bbf575e8)"}
!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}
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