Vitaly Buka c0cabfbdaf
[InstCombiner] Remove trivially dead llvm.allow.{runtime,ubsan}.check() (#84851)
Intrinsic declared to have sideeffects, but it's done only to prevent
moving it. Removing unused ones is OK.

Exacted from #84850 for easier review.
2024-04-01 00:42:18 -07:00

45 lines
1.1 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s --implicit-check-not="call i1 @llvm.allow"
define i1 @test_runtime() {
; CHECK-LABEL: @test_runtime(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[HOT:%.*]] = call i1 @llvm.allow.runtime.check(metadata !"test")
; CHECK-NEXT: ret i1 [[HOT]]
;
entry:
%allow = call i1 @llvm.allow.runtime.check(metadata !"test")
ret i1 %allow
}
define void @test_runtime_void() {
; CHECK-LABEL: @test_runtime_void(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret void
;
entry:
%allow = call i1 @llvm.allow.runtime.check(metadata !"test")
ret void
}
define i1 @test_ubsan() {
; CHECK-LABEL: @test_ubsan(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[HOT:%.*]] = call i1 @llvm.allow.ubsan.check(i8 11)
; CHECK-NEXT: ret i1 [[HOT]]
;
entry:
%allow = call i1 @llvm.allow.ubsan.check(i8 11)
ret i1 %allow
}
define void @test_ubsan_void() {
; CHECK-LABEL: @test_ubsan_void(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret void
;
entry:
%allow = call i1 @llvm.allow.ubsan.check(i8 11)
ret void
}