You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
77 lines
2.6 KiB
77 lines
2.6 KiB
4 months ago
|
; RUN: llc -march=hexagon -ifcvt-limit=0 < %s | FileCheck %s
|
||
|
|
|
||
|
|
; Check if the branch probabilities are reflected in the instructions:
|
||
|
|
; The basic block placement pass should place the more probable successor
|
||
|
|
; block as the fall-through block. The unconditional jump in the predecessor
|
||
|
|
; should then get the right hint (not_taken or ":nt")
|
||
|
|
|
||
|
|
|
||
|
|
@j = external global i32
|
||
|
|
|
||
|
|
define i32 @foo(i32 %a) nounwind {
|
||
|
|
; CHECK: if{{ *}}(!p{{[0-3]}}.new) jump:nt
|
||
|
|
entry:
|
||
|
|
%tobool = icmp eq i32 %a, 0
|
||
|
|
br i1 %tobool, label %if.else, label %if.then, !prof !0
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
%add = add nsw i32 %a, 10
|
||
|
|
%call = tail call i32 bitcast (i32 (...)* @foobar to i32 (i32)*)(i32 %add) nounwind
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
if.else: ; preds = %entry
|
||
|
|
%call2 = tail call i32 bitcast (i32 (...)* @foobar to i32 (i32)*)(i32 4) nounwind
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return: ; preds = %if.else, %if.then
|
||
|
|
%retval.0 = phi i32 [ %call, %if.then ], [ %call2, %if.else ]
|
||
|
|
ret i32 %retval.0
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i32 @foobar(...)
|
||
|
|
|
||
|
|
define i32 @bar(i32 %a) nounwind {
|
||
|
|
; CHECK: if{{ *}}(p{{[0-3]}}.new) jump:nt
|
||
|
|
entry:
|
||
|
|
%tobool = icmp eq i32 %a, 0
|
||
|
|
br i1 %tobool, label %if.else, label %if.then, !prof !1
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
%add = add nsw i32 %a, 10
|
||
|
|
%call = tail call i32 bitcast (i32 (...)* @foobar to i32 (i32)*)(i32 %add) nounwind
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
if.else: ; preds = %entry
|
||
|
|
%call2 = tail call i32 bitcast (i32 (...)* @foobar to i32 (i32)*)(i32 4) nounwind
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return: ; preds = %if.else, %if.then
|
||
|
|
%retval.0 = phi i32 [ %call, %if.then ], [ %call2, %if.else ]
|
||
|
|
ret i32 %retval.0
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @foo_bar(i32 %a, i16 signext %b) nounwind {
|
||
|
|
; CHECK: if{{ *}}(!cmp.eq(r{{[0-9]*}}.new, #0)) jump:nt
|
||
|
|
entry:
|
||
|
|
%0 = load i32, i32* @j, align 4
|
||
|
|
%tobool = icmp eq i32 %0, 0
|
||
|
|
br i1 %tobool, label %if.else, label %if.then, !prof !0
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
%add = add nsw i32 %a, 10
|
||
|
|
%call = tail call i32 bitcast (i32 (...)* @foobar to i32 (i32)*)(i32 %add) nounwind
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
if.else: ; preds = %entry
|
||
|
|
%add1 = add nsw i32 %a, 4
|
||
|
|
%call2 = tail call i32 bitcast (i32 (...)* @foobar to i32 (i32)*)(i32 %add1) nounwind
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return: ; preds = %if.else, %if.then
|
||
|
|
%retval.0 = phi i32 [ %call, %if.then ], [ %call2, %if.else ]
|
||
|
|
ret i32 %retval.0
|
||
|
|
}
|
||
|
|
|
||
|
|
!0 = !{!"branch_weights", i32 64, i32 4}
|
||
|
|
!1 = !{!"branch_weights", i32 4, i32 64}
|