; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -passes=instcombine -S | FileCheck %s target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" declare void @llvm.assume(i1) #1 define i32 @test1(i32 %a) #0 { ; CHECK-LABEL: @test1( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[A:%.*]], 15 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 5 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 5 ; %and = and i32 %a, 15 %cmp = icmp eq i32 %and, 5 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 7 ret i32 %and1 } define i32 @test2(i32 %a) #0 { ; CHECK-LABEL: @test2( ; CHECK-NEXT: [[AND:%.*]] = and i32 [[A:%.*]], 15 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], 10 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 2 ; %and = and i32 %a, 15 %nand = xor i32 %and, -1 %cmp = icmp eq i32 %nand, 4294967285 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 7 ret i32 %and1 } define i32 @test3(i32 %a) #0 { ; CHECK-LABEL: @test3( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[A:%.*]], 15 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP1]], 5 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 5 ; %v = or i32 %a, 4294967280 %cmp = icmp eq i32 %v, 4294967285 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 7 ret i32 %and1 } define i32 @test4(i32 %a) #0 { ; CHECK-LABEL: @test4( ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[A:%.*]], 15 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP1]], 10 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 2 ; %v = or i32 %a, 4294967280 %nv = xor i32 %v, -1 %cmp = icmp eq i32 %nv, 5 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 7 ret i32 %and1 } define i32 @test5(i32 %a) #0 { ; CHECK-LABEL: @test5( ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[A:%.*]], 4 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 4 ; %v = xor i32 %a, 1 %cmp = icmp eq i32 %v, 5 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 7 ret i32 %and1 } define i32 @test6(i32 %a) #0 { ; CHECK-LABEL: @test6( ; CHECK-NEXT: [[V_MASK:%.*]] = and i32 [[A:%.*]], 1073741823 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[V_MASK]], 5 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 5 ; %v = shl i32 %a, 2 %cmp = icmp eq i32 %v, 20 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 63 ret i32 %and1 } define i32 @test7(i32 %a) #0 { ; CHECK-LABEL: @test7( ; CHECK-NEXT: [[V_MASK:%.*]] = and i32 [[A:%.*]], -4 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[V_MASK]], 20 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 20 ; %v = lshr i32 %a, 2 %cmp = icmp eq i32 %v, 5 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 252 ret i32 %and1 } define i32 @test8(i32 %a) #0 { ; CHECK-LABEL: @test8( ; CHECK-NEXT: [[V_MASK:%.*]] = and i32 [[A:%.*]], -4 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[V_MASK]], 20 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 20 ; %v = lshr i32 %a, 2 %cmp = icmp eq i32 %v, 5 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 252 ret i32 %and1 } define i32 @test9(i32 %a) #0 { ; CHECK-LABEL: @test9( ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[A:%.*]], 5 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 0 ; %cmp = icmp sgt i32 %a, 5 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 2147483648 ret i32 %and1 } define i32 @test10(i32 %a) #0 { ; CHECK-LABEL: @test10( ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[A:%.*]], -1 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 -2147483648 ; %cmp = icmp sle i32 %a, -2 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 2147483648 ret i32 %and1 } define i32 @test11(i32 %a) #0 { ; CHECK-LABEL: @test11( ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[A:%.*]], 257 ; CHECK-NEXT: tail call void @llvm.assume(i1 [[CMP]]) ; CHECK-NEXT: ret i32 0 ; %cmp = icmp ule i32 %a, 256 tail call void @llvm.assume(i1 %cmp) %and1 = and i32 %a, 3072 ret i32 %and1 } attributes #0 = { nounwind uwtable } attributes #1 = { nounwind }