forked from OSchip/llvm-project
21 lines
508 B
LLVM
21 lines
508 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
; InstCombine should mark null-checked argument as nonnull at callsite
|
|
declare void @dummy(i32*, i32)
|
|
|
|
define void @test(i32* %a, i32 %b) {
|
|
; CHECK-LABEL: @test
|
|
; CHECK: call void @dummy(i32* nonnull %a, i32 %b)
|
|
entry:
|
|
%cond1 = icmp eq i32* %a, null
|
|
br i1 %cond1, label %dead, label %not_null
|
|
not_null:
|
|
%cond2 = icmp eq i32 %b, 0
|
|
br i1 %cond2, label %dead, label %not_zero
|
|
not_zero:
|
|
call void @dummy(i32* %a, i32 %b)
|
|
ret void
|
|
dead:
|
|
unreachable
|
|
}
|