1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 2; RUN: opt -passes=instcombine -S < %s | FileCheck %s 3 4define i32 @main(ptr %a, i8 %a0, i32 %conv, i8 %a1) { 5; CHECK-LABEL: define i32 @main( 6; CHECK-SAME: ptr [[A:%.*]], i8 [[A0:%.*]], i32 [[CONV:%.*]], i8 [[A1:%.*]]) { 7; CHECK-NEXT: [[A3:%.*]] = trunc i32 [[CONV]] to i8 8; CHECK-NEXT: [[OR11:%.*]] = or i8 [[A0]], [[A3]] 9; CHECK-NEXT: store i8 [[OR11]], ptr [[A]], align 1 10; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[A1]], 0 11; CHECK-NEXT: call void @llvm.assume(i1 [[CMP]]) 12; CHECK-NEXT: ret i32 [[CONV]] 13; 14 %conv1 = sext i8 %a1 to i32 15 %a2 = xor i32 %conv, 1 16 %or = or i32 %conv1, %conv 17 %not = xor i32 %or, -1 18 %shr = lshr i32 %not, 1 19 %add.neg3 = sub i32 %a2, %shr 20 %conv24 = trunc i32 %add.neg3 to i8 21 store i8 %conv24, ptr %a, align 1 22 %sext = shl i32 %conv, 0 23 %conv3 = ashr i32 %sext, 0 24 %a3 = trunc i32 %conv to i8 25 %conv5 = or i8 %a3, 0 26 %xor6 = xor i8 %conv5, 0 27 %xor816 = xor i8 %a0, 0 28 %a4 = xor i8 %xor816, 0 29 %or11 = or i8 %xor6, %a4 30 store i8 %or11, ptr %a, align 1 31 %cmp = icmp slt i8 %a1, 0 32 call void @llvm.assume(i1 %cmp) 33 ret i32 %conv3 34} 35 36declare void @llvm.assume(i1) 37