| ; RUN: opt -S -hotcoldsplit -hotcoldsplit-threshold=0 < %s | FileCheck %s |
| |
| ; Source: |
| ; |
| ; __attribute__((cold)) extern void sink(int); |
| ; extern void sideeffect(int); |
| ; void foo(int cond1, int cond2) { |
| ; if (cond1) { |
| ; if (cond2) { // This is the first cold region we visit. |
| ; sideeffect(0); |
| ; sink(0); |
| ; } |
| ; |
| ; // There's a larger, overlapping cold region here. But we ignore it. |
| ; // This could be improved. |
| ; sideeffect(1); |
| ; sink(1); |
| ; } |
| ; } |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.14.0" |
| |
| ; CHECK-LABEL: define {{.*}}@_Z3fooii |
| ; CHECK: call {{.*}}@_Z3fooii.cold.1 |
| ; CHECK-NOT: _Z3fooii.cold |
| define void @_Z3fooii(i32, i32) { |
| %3 = alloca i32, align 4 |
| %4 = alloca i32, align 4 |
| store i32 %0, i32* %3, align 4 |
| store i32 %1, i32* %4, align 4 |
| %5 = load i32, i32* %3, align 4 |
| %6 = icmp ne i32 %5, 0 |
| br i1 %6, label %7, label %12 |
| |
| ; <label>:7: ; preds = %2 |
| %8 = load i32, i32* %4, align 4 |
| %9 = icmp ne i32 %8, 0 |
| br i1 %9, label %10, label %11 |
| |
| ; <label>:10: ; preds = %7 |
| call void @_Z10sideeffecti(i32 0) |
| call void @_Z4sinki(i32 0) #3 |
| br label %11 |
| |
| ; <label>:11: ; preds = %10, %7 |
| call void @_Z10sideeffecti(i32 1) |
| call void @_Z4sinki(i32 1) #3 |
| br label %12 |
| |
| ; <label>:12: ; preds = %11, %2 |
| ret void |
| } |
| |
| ; CHECK-LABEL: define {{.*}}@_Z3fooii.cold.1 |
| ; CHECK: call void @_Z10sideeffecti(i32 0) |
| |
| declare void @_Z10sideeffecti(i32) |
| |
| declare void @_Z4sinki(i32) cold |
