1; RUN: opt -S -hotcoldsplit -hotcoldsplit-threshold=0 < %s | FileCheck %s 2 3; Source: 4; 5; extern void sideeffect(int); 6; extern void __attribute__((cold)) sink(); 7; void foo(int cond) { 8; if (cond) { //< Start outlining here. 9; sink(); 10; if (cond > 10) 11; goto exit1; 12; else 13; goto exit2; 14; } 15; exit1: 16; sideeffect(1); 17; return; 18; exit2: 19; sideeffect(2); 20; return; 21; } 22 23target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 24target triple = "x86_64-apple-macosx10.14.0" 25 26; CHECK-LABEL: define {{.*}}@foo( 27; CHECK: br i1 {{.*}}, label %exit1, label %codeRepl 28; CHECK-LABEL: codeRepl: 29; CHECK: [[targetBlock:%.*]] = call i1 @foo.cold.1( 30; CHECK-NEXT: br i1 [[targetBlock]], label %exit1, label %[[return:.*]] 31; CHECK-LABEL: exit1: 32; CHECK: call {{.*}}@sideeffect(i32 1) 33; CHECK: [[return]]: 34; CHECK-NEXT: ret void 35define void @foo(i32 %cond) { 36entry: 37 %tobool = icmp eq i32 %cond, 0 38 br i1 %tobool, label %exit1, label %if.then 39 40if.then: ; preds = %entry 41 tail call void (...) @sink() 42 %cmp = icmp sgt i32 %cond, 10 43 br i1 %cmp, label %exit1, label %exit2 44 45exit1: ; preds = %entry, %if.then 46 call void @sideeffect(i32 1) 47 br label %return 48 49exit2: ; preds = %if.then 50 call void @sideeffect(i32 2) 51 br label %return 52 53return: ; preds = %exit2, %exit1 54 ret void 55} 56 57; CHECK-LABEL: define {{.*}}@foo.cold.1( 58; CHECK: br 59; CHECK: [[exit1Stub:.*]]: 60; CHECK-NEXT: ret i1 true 61; CHECK: [[returnStub:.*]]: 62; CHECK-NEXT: ret i1 false 63; CHECK: call {{.*}}@sink 64; CHECK-NEXT: [[cmp:%.*]] = icmp 65; CHECK-NEXT: br i1 [[cmp]], label %[[exit1Stub]], label %exit2 66; CHECK-LABEL: exit2: 67; CHECK-NEXT: call {{.*}}@sideeffect(i32 2) 68; CHECK-NEXT: br label %[[returnStub]] 69 70declare void @sink(...) cold 71 72declare void @sideeffect(i32) 73