1 ; RUN: opt < %s -basicaa -dse -S | FileCheck %s 2 3 declare noalias i8* @malloc(i64) "malloc-like" 4 5 declare void @foo() 6 declare void @bar(i8*) 7 8 define void @test() { 9 %obj = call i8* @malloc(i64 8) 10 store i8 0, i8* %obj 11 ; don't remove store. %obj should be treated like it will be read by the @foo. 12 ; CHECK: store i8 0, i8* %obj 13 call void @foo() ["deopt" (i8* %obj)] 14 ret void 15 } 16 17 define void @test1() { 18 %obj = call i8* @malloc(i64 8) 19 store i8 0, i8* %obj 20 ; CHECK: store i8 0, i8* %obj 21 call void @bar(i8* nocapture %obj) 22 ret void 23 } 24 25 define void @test2() { 26 %obj = call i8* @malloc(i64 8) 27 store i8 0, i8* %obj 28 ; CHECK-NOT: store i8 0, i8* %obj 29 call void @foo() 30 ret void 31 } 32 33 define void @test3() { 34 ; CHECK-LABEL: @test3( 35 %s = alloca i64 36 ; Verify that this first store is not considered killed by the second one 37 ; since it could be observed from the deopt continuation. 38 ; CHECK: store i64 1, i64* %s 39 store i64 1, i64* %s 40 call void @foo() [ "deopt"(i64* %s) ] 41 store i64 0, i64* %s 42 ret void 43 } 44
