37 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -S -passes=instcombine %s | FileCheck %s3 4define void @alloc_elides_test(i32 %data) {5; CHECK-LABEL: @alloc_elides_test(6; CHECK-NEXT: start:7; CHECK-NEXT: ret void8;9start:10 %alloc = call ptr @__rust_alloc(i64 4, i64 32)11 store i32 0, ptr %alloc12 %alloc2 = call ptr @__rust_realloc(ptr %alloc, i64 4, i64 32, i64 8)13 store i32 1, ptr %alloc214 call void @__rust_dealloc(ptr %alloc2, i64 4, i64 32)15 ret void16}17 18define void @alloc_elides_test_virtual(i32 %data, ptr %alloc, ptr %realloc, ptr %dealloc) {19; CHECK-LABEL: @alloc_elides_test_virtual(20; CHECK-NEXT: start:21; CHECK-NEXT: ret void22;23start:24 %a = call noalias ptr %alloc(i64 4, i64 allocalign 32) nounwind allocsize(0) allockind("alloc,uninitialized,aligned") "alloc-family"="__rust_alloc"25 store i32 0, ptr %a26 %a2 = call noalias ptr %realloc(ptr allocptr %a, i64 4, i64 allocalign 32, i64 8) nounwind allocsize(3) allockind("alloc,uninitialized,aligned") "alloc-family"="__rust_alloc"27 store i32 1, ptr %a228 call void %dealloc(ptr allocptr %a2, i64 4, i64 32) nounwind allockind("free") "alloc-family"="__rust_alloc"29 ret void30}31 32declare noalias ptr @__rust_alloc(i64, i64 allocalign) nounwind allocsize(0) allockind("alloc,uninitialized,aligned") "alloc-family"="__rust_alloc"33 34declare noalias ptr @__rust_realloc(ptr allocptr, i64, i64 allocalign, i64) nounwind allocsize(3) allockind("alloc,uninitialized,aligned") "alloc-family"="__rust_alloc"35 36declare void @__rust_dealloc(ptr allocptr, i64, i64) nounwind allockind("free") "alloc-family"="__rust_alloc"37