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|
; RUN: llc -mcpu=corei7 -mtriple=x86_64-linux -verify-machineinstrs -apply-ext-tsp-for-size < %s | FileCheck %s -check-prefix=CHECK-SIZE
; RUN: llc -mcpu=corei7 -mtriple=x86_64-linux -verify-machineinstrs < %s | FileCheck %s -check-prefix=CHECK-PERF
define void @func1() minsize {
;
; +-----+
; | b0 | -+
; +-----+ |
; | |
; | 10 |
; v |
; +-----+ |
; | b1 | | 10000
; +-----+ |
; | |
; | 10 |
; v |
; +-----+ |
; | b2 | <+
; +-----+
;
; CHECK-SIZE-LABEL: func1:
; CHECK-SIZE: %b0
; CHECK-SIZE: %b1
; CHECK-SIZE: %b2
;
; CHECK-PERF-LABEL: func1:
; CHECK-PERF: %b0
; CHECK-PERF: %b2
; CHECK-PERF: %b1
b0:
%call = call zeroext i1 @a()
br i1 %call, label %b1, label %b2, !prof !1
b1:
call void @d()
call void @d()
call void @d()
br label %b2
b2:
call void @e()
ret void
}
define void @func_loop() minsize !prof !9 {
; Test that the algorithm can rotate loops in the presence of profile data.
;
; +--------+
; | entry |
; +--------+
; |
; | 1
; v
; +--------+ 16 +--------+
; | if.then| <---- | header | <+
; +--------+ +--------+ |
; | | |
; | | 160 |
; | v |
; | +--------+ |
; | | if.else| | 175
; | +--------+ |
; | | |
; | | 160 |
; | v |
; | 16 +--------+ |
; +------------> | if.end | -+
; +--------+
; |
; | 1
; v
; +--------+
; | end |
; +--------+
;
; CHECK-SIZE-LABEL: func_loop:
; CHECK-SIZE: %entry
; CHECK-SIZE: %header
; CHECK-SIZE: %if.then
; CHECK-SIZE: %if.else
; CHECK-SIZE: %if.end
; CHECK-SIZE: %end
;
; CHECK-PERF-LABEL: func_loop:
; CHECK-PERF: %entry
; CHECK-PERF: %header
; CHECK-PERF: %if.else
; CHECK-PERF: %if.end
; CHECK-PERF: %if.then
; CHECK-PERF: %end
entry:
br label %header
header:
call void @e()
%call = call zeroext i1 @a()
br i1 %call, label %if.then, label %if.else, !prof !10
if.then:
call void @f()
br label %if.end
if.else:
call void @g()
br label %if.end
if.end:
call void @h()
%call2 = call zeroext i1 @a()
br i1 %call2, label %header, label %end
end:
ret void
}
declare zeroext i1 @a()
declare void @b()
declare void @c()
declare void @d()
declare void @e()
declare void @g()
declare void @f()
declare void @h()
!1 = !{!"branch_weights", i32 10, i32 10000}
!9 = !{!"function_entry_count", i64 1}
!10 = !{!"branch_weights", i32 16, i32 160}
|
