1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -O1 -S < %s | FileCheck %s 3; RUN: opt -O2 -S < %s | FileCheck %s 4; RUN: opt -O3 -S < %s | FileCheck %s 5 6; srem should be folded based on branch conditions 7; This can be done by IPSCCP or CVP. 8 9define i32 @PR57472(i32 noundef %x) { 10; CHECK-LABEL: @PR57472( 11; CHECK-NEXT: entry: 12; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[X:%.*]], -1 13; CHECK-NEXT: [[REM:%.*]] = and i32 [[X]], 15 14; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[CMP]], i32 [[REM]], i32 42 15; CHECK-NEXT: ret i32 [[SPEC_SELECT]] 16; 17entry: 18 %x.addr = alloca i32, align 4 19 store i32 %x, ptr %x.addr, align 4 20 %0 = load i32, ptr %x.addr, align 4 21 %cmp = icmp sge i32 %0, 0 22 br i1 %cmp, label %cond.true, label %cond.false 23 24cond.true: 25 %1 = load i32, ptr %x.addr, align 4 26 %rem = srem i32 %1, 16 27 br label %cond.end 28 29cond.false: 30 br label %cond.end 31 32cond.end: 33 %cond = phi i32 [ %rem, %cond.true ], [ 42, %cond.false ] 34 ret i32 %cond 35} 36