1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt < %s -mtriple=aarch64-unknown-linux-gnu -mattr=+sme -S -passes=inline -inlinedefault-threshold=1 | FileCheck %s 3 4; This test sets the inline-threshold to 1 such that by default the call to @streaming_callee is not inlined. 5; However, if the call to @streaming_callee requires a streaming-mode change, it should always inline the call because the streaming-mode change is more expensive. 6target triple = "aarch64" 7 8declare void @streaming_compatible_f() "aarch64_pstate_sm_compatible" 9 10; Function @streaming_callee doesn't contain any operations that may use ZA 11; state and therefore can be legally inlined into a normal function. 12define void @streaming_callee() "aarch64_pstate_sm_enabled" { 13; CHECK-LABEL: define void @streaming_callee 14; CHECK-SAME: () #[[ATTR1:[0-9]+]] { 15; CHECK-NEXT: call void @streaming_compatible_f() 16; CHECK-NEXT: call void @streaming_compatible_f() 17; CHECK-NEXT: ret void 18; 19 call void @streaming_compatible_f() 20 call void @streaming_compatible_f() 21 ret void 22} 23 24; Inline call to @streaming_callee to remove a streaming mode change. 25define void @non_streaming_caller_inline() { 26; CHECK-LABEL: define void @non_streaming_caller_inline 27; CHECK-SAME: () #[[ATTR2:[0-9]+]] { 28; CHECK-NEXT: call void @streaming_compatible_f() 29; CHECK-NEXT: call void @streaming_compatible_f() 30; CHECK-NEXT: ret void 31; 32 call void @streaming_callee() 33 ret void 34} 35 36; Don't inline call to @streaming_callee when the inline-threshold is set to 1, because it does not eliminate a streaming-mode change. 37define void @streaming_caller_dont_inline() "aarch64_pstate_sm_enabled" { 38; CHECK-LABEL: define void @streaming_caller_dont_inline 39; CHECK-SAME: () #[[ATTR1]] { 40; CHECK-NEXT: call void @streaming_callee() 41; CHECK-NEXT: ret void 42; 43 call void @streaming_callee() 44 ret void 45} 46