1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 2; RUN: opt < %s -passes=sccp -S | FileCheck %s 3 4define i1 @vscale_i32_noattr() { 5; CHECK-LABEL: define i1 @vscale_i32_noattr() { 6; CHECK-NEXT: [[SCALE:%.*]] = call i32 @llvm.vscale.i32() 7; CHECK-NEXT: [[CMP2:%.*]] = icmp ule i32 [[SCALE]], 16 8; CHECK-NEXT: [[RES:%.*]] = and i1 true, [[CMP2]] 9; CHECK-NEXT: ret i1 [[RES]] 10; 11 %scale = call i32 @llvm.vscale.i32() 12 %cmp1 = icmp uge i32 %scale, 1 13 %cmp2 = icmp ule i32 %scale, 16 14 %res = and i1 %cmp1, %cmp2 15 ret i1 %res 16} 17 18define i1 @vscale_i32_attr() vscale_range(1, 16) { 19; CHECK-LABEL: define i1 @vscale_i32_attr( 20; CHECK-SAME: ) #[[ATTR0:[0-9]+]] { 21; CHECK-NEXT: [[SCALE:%.*]] = call i32 @llvm.vscale.i32() 22; CHECK-NEXT: ret i1 true 23; 24 %scale = call i32 @llvm.vscale.i32() 25 %cmp1 = icmp uge i32 %scale, 1 26 %cmp2 = icmp ule i32 %scale, 16 27 %res = and i1 %cmp1, %cmp2 28 ret i1 %res 29} 30 31define i1 @vscale_i64_noattr() { 32; CHECK-LABEL: define i1 @vscale_i64_noattr() { 33; CHECK-NEXT: [[SCALE:%.*]] = call i64 @llvm.vscale.i64() 34; CHECK-NEXT: [[CMP2:%.*]] = icmp ule i64 [[SCALE]], 16 35; CHECK-NEXT: [[RES:%.*]] = and i1 true, [[CMP2]] 36; CHECK-NEXT: ret i1 [[RES]] 37; 38 %scale = call i64 @llvm.vscale.i64() 39 %cmp1 = icmp uge i64 %scale, 1 40 %cmp2 = icmp ule i64 %scale, 16 41 %res = and i1 %cmp1, %cmp2 42 ret i1 %res 43} 44 45define i1 @vscale_i64_attr() vscale_range(1, 16) { 46; CHECK-LABEL: define i1 @vscale_i64_attr( 47; CHECK-SAME: ) #[[ATTR0]] { 48; CHECK-NEXT: [[SCALE:%.*]] = call i64 @llvm.vscale.i64() 49; CHECK-NEXT: ret i1 true 50; 51 %scale = call i64 @llvm.vscale.i64() 52 %cmp1 = icmp uge i64 %scale, 1 53 %cmp2 = icmp ule i64 %scale, 16 54 %res = and i1 %cmp1, %cmp2 55 ret i1 %res 56} 57 58define i32 @vscale_branch_elim(i32 %x) vscale_range(1, 16) { 59; CHECK-LABEL: define i32 @vscale_branch_elim( 60; CHECK-SAME: i32 [[X:%.*]]) #[[ATTR0]] { 61; CHECK-NEXT: [[ENTRY:.*:]] 62; CHECK-NEXT: [[SCALE:%.*]] = call i32 @llvm.vscale.i32() 63; CHECK-NEXT: [[BOUND:%.*]] = shl nuw nsw i32 [[SCALE]], 3 64; CHECK-NEXT: br label %[[IF_END:.*]] 65; CHECK: [[IF_END]]: 66; CHECK-NEXT: ret i32 [[X]] 67; 68entry: 69 %scale = call i32 @llvm.vscale.i32() 70 %bound = shl nsw nuw i32 %scale, 3 71 %cmp = icmp uge i32 1, %bound 72 br i1 %cmp, label %if.then, label %if.end 73 74if.then: 75 %double = mul i32 %x, 2 76 br label %if.end 77 78if.end: 79 %res = phi i32 [ %x, %entry ], [ %double, %if.then] 80 ret i32 %res 81} 82