1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt %s -passes=inline -inline-threshold=20 -S | FileCheck %s 3 4declare i1 @llvm.is.constant.i64(i64) 5declare void @foo() 6 7define void @callee(i64 %val) { 8; CHECK-LABEL: define void @callee 9; CHECK-SAME: (i64 [[VAL:%.*]]) { 10; CHECK-NEXT: [[COND:%.*]] = call i1 @llvm.is.constant.i64(i64 [[VAL]]) 11; CHECK-NEXT: br i1 [[COND]], label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]] 12; CHECK: cond.true: 13; CHECK-NEXT: call void @foo() 14; CHECK-NEXT: call void @foo() 15; CHECK-NEXT: ret void 16; CHECK: cond.false: 17; CHECK-NEXT: ret void 18; 19 %cond = call i1 @llvm.is.constant.i64(i64 %val) 20 br i1 %cond, label %cond.true, label %cond.false 21 22cond.true: 23; Rack up costs with a couple of function calls so that this function 24; gets inlined only when @llvm.is.constant.i64 is folded. In reality, 25; the "then" clause of __builtin_constant_p tends to have statements 26; that fold very well, so the cost of the "then" clause is not a huge 27; concern. 28 call void @foo() 29 call void @foo() 30 ret void 31 32cond.false: 33 ret void 34} 35 36define void @caller(i64 %val) { 37; CHECK-LABEL: define void @caller 38; CHECK-SAME: (i64 [[VAL:%.*]]) { 39; CHECK-NEXT: [[COND_I:%.*]] = call i1 @llvm.is.constant.i64(i64 [[VAL]]) 40; CHECK-NEXT: br i1 [[COND_I]], label [[COND_TRUE_I:%.*]], label [[COND_FALSE_I:%.*]] 41; CHECK: cond.true.i: 42; CHECK-NEXT: call void @foo() 43; CHECK-NEXT: call void @foo() 44; CHECK-NEXT: br label [[CALLEE_EXIT:%.*]] 45; CHECK: cond.false.i: 46; CHECK-NEXT: br label [[CALLEE_EXIT]] 47; CHECK: callee.exit: 48; CHECK-NEXT: ret void 49; 50 call void @callee(i64 %val) 51 ret void 52} 53