llvm/llvm/test/Transforms/SCCP/return-constant.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=ipsccp,instcombine -S | FileCheck %s

define internal i32 @foo(i1 %C) {
; CHECK-LABEL: @foo(
; CHECK-NEXT:    br i1 [[C:%.*]], label [[T:%.*]], label [[F:%.*]]
; CHECK:       T:
; CHECK-NEXT:    ret i32 poison
; CHECK:       F:
; CHECK-NEXT:    ret i32 poison
;
  br i1 %C, label %T, label %F

T:              ; preds = %0
  ret i32 52

F:              ; preds = %0
  ret i32 52
}

define i1 @caller(i1 %C) {
; CHECK-LABEL: @caller(
; CHECK-NEXT:    [[X:%.*]] = call i32 @foo(i1 [[C:%.*]])
; CHECK-NEXT:    ret i1 true
;
  %X = call i32 @foo( i1 %C )             ; <i32> [#uses=1]
  %Y = icmp ne i32 %X, 0          ; <i1> [#uses=1]
  ret i1 %Y
}

define i1 @invokecaller(i1 %C) personality ptr @__gxx_personality_v0 {
; CHECK-LABEL: @invokecaller(
; CHECK-NEXT:    [[X:%.*]] = invoke i32 @foo(i1 [[C:%.*]])
; CHECK-NEXT:            to label [[OK:%.*]] unwind label [[FAIL:%.*]]
; CHECK:       OK:
; CHECK-NEXT:    ret i1 true
; CHECK:       FAIL:
; CHECK-NEXT:    [[EXN:%.*]] = landingpad { ptr, i32 }
; CHECK-NEXT:            cleanup
; CHECK-NEXT:    ret i1 false
;
  %X = invoke i32 @foo( i1 %C ) to label %OK unwind label %FAIL             ; <i32> [#uses=1]
OK:
  %Y = icmp ne i32 %X, 0          ; <i1> [#uses=1]
  ret i1 %Y
FAIL:
  %exn = landingpad {ptr, i32}
  cleanup
  ret i1 false
}

declare i32 @__gxx_personality_v0(...)