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; RUN: opt -passes='require<demanded-bits>,constraint-elimination,require<demanded-bits>' -disable-verify -verify-analysis-invalidation=false -debug-pass-manager -disable-output %s 2>&1 | FileCheck %s
; Check that constraint-elimination properly invalidates anlyses.
; FIXME: ssub simplification currently doesn't properly set the change status
; after modifying the IR, which causes DemandedBits to be preserved.
; CHECK: Running pass: RequireAnalysisPass
; CHECK-NEXT: Running analysis: DemandedBitsAnalysis on ssub_no_overflow_due_to_or_conds
; CHECK-NEXT: Running analysis: AssumptionAnalysis on ssub_no_overflow_due_to_or_conds
; CHECK-NEXT: Running analysis: TargetIRAnalysis on ssub_no_overflow_due_to_or_conds
; CHECK-NEXT: Running analysis: DominatorTreeAnalysis on ssub_no_overflow_due_to_or_conds
; CHECK-NEXT: Running pass: ConstraintEliminationPass on ssub_no_overflow_due_to_or_conds
; CHECK-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis on ssub_no_overflow_due_to_or_conds
; CHECK-NEXT: Invalidating analysis: DemandedBitsAnalysis on ssub_no_overflow_due_to_or_conds
; CHECK-NEXT: Running pass: RequireAnalysisPass
; CHECK-NEXT: Running analysis: DemandedBitsAnalysis on ssub_no_overflow_due_to_or_conds
; CHECK-NEXT: Running pass: RequireAnalysisPass
; CHECK-NEXT: Running analysis: DemandedBitsAnalysis on uge_zext
; CHECK-NEXT: Running analysis: AssumptionAnalysis on uge_zext
; CHECK-NEXT: Running analysis: TargetIRAnalysis on uge_zext
; CHECK-NEXT: Running analysis: DominatorTreeAnalysis on uge_zext
; CHECK-NEXT: Running pass: ConstraintEliminationPass on uge_zext
; CHECK-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis on uge_zext
; CHECK-NEXT: Invalidating analysis: DemandedBitsAnalysis on uge_zext
; CHECK-NEXT: Running pass: RequireAnalysisPass
; CHECK-NEXT: Running analysis: DemandedBitsAnalysis on uge_zext
declare { i8, i1 } @llvm.ssub.with.overflow.i8(i8, i8)
define i8 @ssub_no_overflow_due_to_or_conds(i8 %a, i8 %b) {
entry:
%c.1 = icmp sle i8 %b, %a
%c.2 = icmp slt i8 %a, 0
%or.cond = or i1 %c.2, %c.1
br i1 %or.cond, label %exit.fail, label %math
math:
%op = tail call { i8, i1 } @llvm.ssub.with.overflow.i8(i8 %b, i8 %a)
%status = extractvalue { i8, i1 } %op, 1
br i1 %status, label %exit.fail, label %exit.ok
exit.ok:
%res = extractvalue { i8, i1 } %op, 0
ret i8 %res
exit.fail:
ret i8 0
}
declare void @use_res({ i8, i1 })
define i1 @uge_zext(i8 %x, i16 %y) {
entry:
%x.ext = zext i8 %x to i16
%c.1 = icmp uge i16 %x.ext, %y
br i1 %c.1, label %bb1, label %bb2
bb1:
%t.1 = icmp uge i16 %x.ext, %y
ret i1 %t.1
bb2:
ret i1 false
}
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