1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs --version 5 2; RUN: opt -passes="ipsccp<func-spec>" -funcspec-min-function-size=1 \ 3; RUN: -funcspec-for-literal-constant=true \ 4; RUN: -funcspec-min-codesize-savings=50 \ 5; RUN: -funcspec-min-latency-savings=0 \ 6; RUN: -S < %s | FileCheck %s 7 8; Verify that we are able to estimate the codesize savings arising from a block 9; which is found dead, where the block has a predecessor that was found dead by 10; IPSCCP. 11define i32 @main(i1 %flag) { 12 %notspec = call i32 @test(i1 %flag, i1 true) 13 %spec = call i32 @test(i1 true, i1 true) 14 %sum = add i32 %notspec, %spec 15 ret i32 %sum 16} 17 18define internal i32 @test(i1 %argflag, i1 %constflag) { 19entry: 20 br i1 %argflag, label %block1, label %block3 21 22block1: 23 br i1 %constflag, label %end, label %block2 24 25block2: 26 br label %block3 27 28block3: 29 call void @do_something() 30 call void @do_something() 31 call void @do_something() 32 call void @do_something() 33 br label %end 34 35end: 36 %res = phi i32 [ 0, %block1 ], [ 1, %block3] 37 ret i32 %res 38} 39 40declare void @do_something() 41; CHECK-LABEL: define range(i32 0, 2) i32 @main( 42; CHECK-SAME: i1 [[FLAG:%.*]]) { 43; CHECK-NEXT: [[NOTSPEC:%.*]] = call i32 @test(i1 [[FLAG]], i1 true) 44; CHECK-NEXT: [[SPEC:%.*]] = call i32 @test.specialized.1(i1 true, i1 true) 45; CHECK-NEXT: [[SUM:%.*]] = add nuw nsw i32 [[NOTSPEC]], 0 46; CHECK-NEXT: ret i32 [[SUM]] 47; 48; 49; CHECK-LABEL: define internal range(i32 0, 2) i32 @test( 50; CHECK-SAME: i1 [[ARGFLAG:%.*]], i1 [[CONSTFLAG:%.*]]) { 51; CHECK-NEXT: [[ENTRY:.*:]] 52; CHECK-NEXT: br i1 [[ARGFLAG]], label %[[BLOCK1:.*]], label %[[BLOCK3:.*]] 53; CHECK: [[BLOCK1]]: 54; CHECK-NEXT: br label %[[END:.*]] 55; CHECK: [[BLOCK3]]: 56; CHECK-NEXT: call void @do_something() 57; CHECK-NEXT: call void @do_something() 58; CHECK-NEXT: call void @do_something() 59; CHECK-NEXT: call void @do_something() 60; CHECK-NEXT: br label %[[END]] 61; CHECK: [[END]]: 62; CHECK-NEXT: [[RES:%.*]] = phi i32 [ 0, %[[BLOCK1]] ], [ 1, %[[BLOCK3]] ] 63; CHECK-NEXT: ret i32 [[RES]] 64; 65; 66; CHECK-LABEL: define internal i32 @test.specialized.1( 67; CHECK-SAME: i1 [[ARGFLAG:%.*]], i1 [[CONSTFLAG:%.*]]) { 68; CHECK-NEXT: [[ENTRY:.*:]] 69; CHECK-NEXT: br label %[[BLOCK1:.*]] 70; CHECK: [[BLOCK1]]: 71; CHECK-NEXT: br label %[[END:.*]] 72; CHECK: [[END]]: 73; CHECK-NEXT: ret i32 poison 74; 75