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 branch 9; based on a binary operator, where one operand is already found constant by 10; IPSCCP. 11define i32 @main(i1 %flag) { 12 %notspec = call i32 @test(i1 %flag, i1 false) 13 %spec = call i32 @test(i1 false, i1 false) 14 %sum = add i32 %notspec, %spec 15 ret i32 %sum 16} 17 18define internal i32 @test(i1 %argflag, i1 %constflag) { 19entry: 20 %cond = or i1 %argflag, %constflag 21 br i1 %cond, label %if.then, label %if.end 22 23if.then: 24 call void @do_something() 25 call void @do_something() 26 call void @do_something() 27 call void @do_something() 28 br label %if.end 29 30if.end: 31 %res = phi i32 [ 0, %entry ], [ 1, %if.then] 32 ret i32 %res 33} 34 35declare void @do_something() 36; CHECK-LABEL: define range(i32 0, 2) i32 @main( 37; CHECK-SAME: i1 [[FLAG:%.*]]) { 38; CHECK-NEXT: [[NOTSPEC:%.*]] = call i32 @test(i1 [[FLAG]], i1 false) 39; CHECK-NEXT: [[SPEC:%.*]] = call i32 @test.specialized.1(i1 false, i1 false) 40; CHECK-NEXT: [[SUM:%.*]] = add nuw nsw i32 [[NOTSPEC]], 0 41; CHECK-NEXT: ret i32 [[SUM]] 42; 43; 44; CHECK-LABEL: define internal range(i32 0, 2) i32 @test( 45; CHECK-SAME: i1 [[ARGFLAG:%.*]], i1 [[CONSTFLAG:%.*]]) { 46; CHECK-NEXT: [[ENTRY:.*]]: 47; CHECK-NEXT: [[COND:%.*]] = or i1 [[ARGFLAG]], false 48; CHECK-NEXT: br i1 [[COND]], label %[[IF_THEN:.*]], label %[[IF_END:.*]] 49; CHECK: [[IF_THEN]]: 50; CHECK-NEXT: call void @do_something() 51; CHECK-NEXT: call void @do_something() 52; CHECK-NEXT: call void @do_something() 53; CHECK-NEXT: call void @do_something() 54; CHECK-NEXT: br label %[[IF_END]] 55; CHECK: [[IF_END]]: 56; CHECK-NEXT: [[RES:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ 1, %[[IF_THEN]] ] 57; CHECK-NEXT: ret i32 [[RES]] 58; 59; 60; CHECK-LABEL: define internal i32 @test.specialized.1( 61; CHECK-SAME: i1 [[ARGFLAG:%.*]], i1 [[CONSTFLAG:%.*]]) { 62; CHECK-NEXT: [[ENTRY:.*:]] 63; CHECK-NEXT: br label %[[IF_END:.*]] 64; CHECK: [[IF_END]]: 65; CHECK-NEXT: ret i32 poison 66; 67