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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -callsite-splitting -S -o - < %s | FileCheck %s
; Check that we can split the critical edge between Top and CallSiteBB, and
; rewrite the first callbr's indirect destination correctly.
define void @caller() {
; CHECK-LABEL: @caller(
; CHECK-NEXT: Top:
; CHECK-NEXT: callbr void asm sideeffect "", "i,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@caller, [[TOP_SPLIT:%.*]]))
; CHECK-NEXT: to label [[NEXTCOND:%.*]] [label %Top.split]
; CHECK-LABEL: Top.split:
; CHECK-NEXT: call void @callee(i1 false)
; CHECK-NEXT: br label [[CALLSITEBB:%.*]]
; CHECK-LABEL: NextCond:
; CHECK-NEXT: br label [[NEXTCOND_SPLIT:%.*]]
; CHECK-LABEL: NextCond.split:
; CHECK-NEXT: call void @callee(i1 true)
; CHECK-NEXT: br label [[CALLSITEBB]]
; CHECK-LABEL: CallSiteBB:
; CHECK-NEXT: [[PHI:%.*]] = phi i1 [ false, [[TOP_SPLIT]] ], [ true, [[NEXTCOND_SPLIT]] ]
; CHECK-NEXT: callbr void asm sideeffect "", "r,i,~{dirflag},~{fpsr},~{flags}"(i1 [[PHI]], i8* blockaddress(@caller, [[END2:%.*]]))
; CHECK-NEXT: to label [[END:%.*]] [label %End2]
; CHECK-LABEL: End:
; CHECK-NEXT: ret void
; CHECK-LABEL: End2:
; CHECK-NEXT: ret void
;
Top:
callbr void asm sideeffect "", "i,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@caller, %CallSiteBB))
to label %NextCond [label %CallSiteBB]
NextCond:
br label %CallSiteBB
CallSiteBB:
%phi = phi i1 [0, %Top],[1, %NextCond]
call void @callee(i1 %phi)
callbr void asm sideeffect "", "r,i,~{dirflag},~{fpsr},~{flags}"(i1 %phi, i8* blockaddress(@caller, %End2))
to label %End [label %End2]
End:
ret void
End2:
ret void
}
define void @callee(i1 %b) {
; CHECK-LABEL: @callee(
; CHECK-NEXT: ret void
;
ret void
}
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