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llvm-mirror/test/Analysis/BasicAA/deoptimize.ll
Artur Pilipenko d3849bdc93 [BasicAA] Deoptimize intrinsics don't modify memory
Similarly to assumes and guards deoptimize intrinsics are
marked as writing to ensure proper control dependencies
but they never modify any particular memory location.

Differential Revision: https://reviews.llvm.org/D91658
2020-11-19 12:08:33 -08:00

15 lines
671 B
LLVM

; RUN: opt < %s -basic-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) #0
declare void @llvm.experimental.deoptimize.void(...)
declare void @unknown_but_readonly() readonly
define void @test1(i8* %p) {
call void(...) @llvm.experimental.deoptimize.void() [ "deopt"() ]
ret void
; CHECK-LABEL: Function: test1:
; CHECK: Just Ref: Ptr: i8* %p <-> call void (...) @llvm.experimental.deoptimize.isVoid() [ "deopt"() ]
}