61 lines
1.6 KiB
LLVM
61 lines
1.6 KiB
LLVM
|
; 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
|