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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -ipsccp %s | FileCheck %s
; Make sure IPSCCP does not assume %r < 256 for @f1. Undef is passed at a call
; site, which won't be eliminated.
define i1 @constant_and_undef(i64 %a) {
; CHECK-LABEL: @constant_and_undef(
; CHECK-NEXT: [[C_1:%.*]] = call i1 @f1(i64 undef)
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[C_2:%.*]] = call i1 @f1(i64 10)
; CHECK-NEXT: br label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[RANGE:%.*]] = and i64 [[A:%.*]], 255
; CHECK-NEXT: [[C_3:%.*]] = call i1 @f1(i64 [[RANGE]])
; CHECK-NEXT: [[R_1:%.*]] = and i1 [[C_1]], [[C_2]]
; CHECK-NEXT: [[R_2:%.*]] = and i1 [[R_1]], [[C_3]]
; CHECK-NEXT: ret i1 [[R_2]]
;
%c.1 = call i1 @f1(i64 undef)
br label %bb1
bb1:
%c.2 = call i1 @f1(i64 10)
br label %bb2
bb2:
%range = and i64 %a, 255
%c.3 = call i1 @f1(i64 %range)
%r.1 = and i1 %c.1, %c.2
%r.2 = and i1 %r.1, %c.3
ret i1 %r.2
}
declare void @sideeffect(i1, i64 %a)
define internal i1 @f1(i64 %r) {
; CHECK-LABEL: define {{.*}} @f1(
; CHECK-NEXT: [[C:%.*]] = icmp ult i64 [[R:%.*]], 256
; CHECK-NEXT: call void @sideeffect(i1 [[C]], i64 [[R]])
; CHECK-NEXT: ret i1 [[C]]
;
%c = icmp ult i64 %r, 256
call void @sideeffect(i1 %c, i64 %r)
ret i1 %c
}
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