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|
; RUN: llc < %s -O1 -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -ppc-use-branch-hint=false | FileCheck %s
; RUN: llc < %s -O1 -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -ppc-use-branch-hint=true | FileCheck %s -check-prefix=CHECK-HINT
define void @branch_hint_1(i32 %src) {
entry:
%cmp = icmp eq i32 %src, 0
br i1 %cmp, label %if.then, label %if.end
if.then:
tail call void @foo() #0
unreachable
if.end:
call void @goo()
ret void
; CHECK-LABEL: branch_hint_1:
; CHECK: beq
; CHECK-HINT-LABEL: branch_hint_1:
; CHECK-HINT: beq-
}
define void @branch_hint_2(i32 %src) {
entry:
%cmp = icmp eq i32 %src, 0
br i1 %cmp, label %if.then, label %if.end
if.then:
call void @goo()
ret void
if.end:
tail call void @foo() #0
unreachable
; CHECK-LABEL: @branch_hint_2
; CHECK: bne
; CHECK-HINT-LABEL: @branch_hint_2
; CHECK-HINT: bne-
}
declare void @foo()
attributes #0 = { noreturn }
define void @branch_hint_3(i32 %src) {
entry:
%cmp = icmp eq i32 %src, 0
br i1 %cmp, label %if.then, label %if.end, !prof !0
if.then:
call void @foo()
ret void
if.end:
call void @goo()
ret void
; CHECK-LABEL: @branch_hint_3
; CHECK: bne
; CHECK-HINT-LABEL: @branch_hint_3
; CHECK-HINT: bne
}
!0 = !{!"branch_weights", i32 64, i32 4}
define void @branch_hint_4(i32 %src) {
entry:
%cmp = icmp eq i32 %src, 0
br i1 %cmp, label %if.then, label %if.end, !prof !1
if.then:
call void @foo()
ret void
if.end:
call void @goo()
ret void
; CHECK-HINT-LABEL: branch_hint_4
; CHECK-HINT: bne
}
!1 = !{!"branch_weights", i32 64, i32 8}
define void @branch_hint_5(i32 %src) {
entry:
%cmp = icmp eq i32 %src, 0
br i1 %cmp, label %if.then, label %if.end
if.then:
ret void
if.end:
call void @goo()
ret void
; CHECK-HINT-LABEL: branch_hint_5:
; CHECK-HINT: beq
}
declare void @goo()
define void @branch_hint_6(i32 %src1, i32 %src2, i32 %src3) {
entry:
%cmp = icmp eq i32 %src1, 0
br i1 %cmp, label %if.end.6, label %if.end, !prof !3
if.end:
%cmp1 = icmp eq i32 %src2, 0
br i1 %cmp1, label %if.end.3, label %if.then.2
if.then.2:
tail call void @foo() #0
unreachable
if.end.3:
%cmp4 = icmp eq i32 %src3, 1
br i1 %cmp4, label %if.then.5, label %if.end.6
if.then.5:
tail call void @foo() #0
unreachable
if.end.6:
ret void
; CHECK-HINT-LABEL: branch_hint_6:
; CHECK-HINT: bne
; CHECK-HINT: bne-
; CHECK-HINT: bne+
}
!3 = !{!"branch_weights", i32 64, i32 4}
|
