assume.ll
1.52 KB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -ipsccp -S | FileCheck %s
declare void @use(i1)
declare void @llvm.assume(i1)
define void @basic(i32 %v) {
; CHECK-LABEL: @basic(
; CHECK-NEXT: [[A1:%.*]] = icmp ult i32 [[V:%.*]], 10
; CHECK-NEXT: call void @llvm.assume(i1 [[A1]])
; CHECK-NEXT: [[A2:%.*]] = icmp ugt i32 [[V]], 5
; CHECK-NEXT: call void @llvm.assume(i1 [[A2]])
; CHECK-NEXT: call void @use(i1 true)
; CHECK-NEXT: [[C2:%.*]] = icmp ult i32 [[V]], 9
; CHECK-NEXT: call void @use(i1 [[C2]])
; CHECK-NEXT: call void @use(i1 false)
; CHECK-NEXT: [[C4:%.*]] = icmp ugt i32 [[V]], 8
; CHECK-NEXT: call void @use(i1 [[C4]])
; CHECK-NEXT: call void @use(i1 true)
; CHECK-NEXT: [[C6:%.*]] = icmp ugt i32 [[V]], 6
; CHECK-NEXT: call void @use(i1 [[C6]])
; CHECK-NEXT: call void @use(i1 false)
; CHECK-NEXT: [[C8:%.*]] = icmp ult i32 [[V]], 7
; CHECK-NEXT: call void @use(i1 [[C8]])
; CHECK-NEXT: ret void
;
%a1 = icmp ult i32 %v, 10
call void @llvm.assume(i1 %a1)
%a2 = icmp ugt i32 %v, 5
call void @llvm.assume(i1 %a2)
%c1 = icmp ult i32 %v, 10
call void @use(i1 %c1)
%c2 = icmp ult i32 %v, 9
call void @use(i1 %c2)
%c3 = icmp ugt i32 %v, 9
call void @use(i1 %c3)
%c4 = icmp ugt i32 %v, 8
call void @use(i1 %c4)
%c5 = icmp ugt i32 %v, 5
call void @use(i1 %c5)
%c6 = icmp ugt i32 %v, 6
call void @use(i1 %c6)
%c7 = icmp ult i32 %v, 6
call void @use(i1 %c7)
%c8 = icmp ult i32 %v, 7
call void @use(i1 %c8)
ret void
}