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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature
; RUN: opt -passes=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: define {{[^@]+}}@caller() {
; CHECK-NEXT: Top:
; CHECK-NEXT: callbr void asm sideeffect "", "!i,~{dirflag},~{fpsr},~{flags}"()
; CHECK-NEXT: to label [[NEXTCOND:%.*]] [label %Top.split]
; CHECK: Top.split:
; CHECK-NEXT: call void @callee(i1 false)
; CHECK-NEXT: br label [[CALLSITEBB:%.*]]
; CHECK: NextCond:
; CHECK-NEXT: br label [[NEXTCOND_SPLIT:%.*]]
; CHECK: NextCond.split:
; CHECK-NEXT: call void @callee(i1 true)
; CHECK-NEXT: br label [[CALLSITEBB]]
; CHECK: 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]])
; CHECK-NEXT: to label [[END:%.*]] [label %End2]
; CHECK: End:
; CHECK-NEXT: ret void
; CHECK: End2:
; CHECK-NEXT: ret void
;
Top:
callbr void asm sideeffect "", "!i,~{dirflag},~{fpsr},~{flags}"()
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)
to label %End [label %End2]
End:
ret void
End2:
ret void
}
define void @callee(i1 %b) {
; CHECK-LABEL: define {{[^@]+}}@callee
; CHECK-SAME: (i1 [[B:%.*]]) {
; CHECK-NEXT: ret void
;
ret void
}
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