Reviewers: jdoerfert
Reviewed By: jdoerfert
Subscribers: hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D77403
#include "llvm/Pass.h"
#include "llvm/Support/DebugCounter.h"
#include "llvm/Transforms/Scalar.h"
+#include "llvm/Transforms/Utils/AssumeBundleBuilder.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/Transforms/Utils/Local.h"
using namespace llvm;
return false;
salvageDebugInfo(*I);
+ salvageKnowledge(I);
// Null out all of the instruction's operands to see if any operand becomes
// dead as we go.
--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -dce -S --enable-knowledge-retention < %s | FileCheck %s
+
+define void @test(i32* %P) {
+; CHECK-LABEL: @test(
+; CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(i32* [[P:%.*]], i64 4), "nonnull"(i32* [[P]]) ]
+; CHECK-NEXT: ret void
+;
+ %a = load i32, i32* %P
+ ret void
+}