1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals 2; Test that the printf library call simplifier works correctly. 3; 4; RUN: opt < %s -instcombine -S | FileCheck %s 5 6target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" 7 8@hello_world = constant [13 x i8] c"hello world\0A\00" 9@h = constant [2 x i8] c"h\00" 10@percent_s = constant [4 x i8] c"%s\0A\00" 11@format_str = constant [3 x i8] c"%s\00" 12@charstr = constant [2 x i8] c"a\00" 13@empty = constant [1 x i8] c"\00" 14 15declare void @printf(i8*, ...) 16 17; Check simplification of printf with void return type. 18 19;. 20; CHECK: @[[HELLO_WORLD:[a-zA-Z0-9_$"\\.-]+]] = constant [13 x i8] c"hello world\0A\00" 21; CHECK: @[[H:[a-zA-Z0-9_$"\\.-]+]] = constant [2 x i8] c"h\00" 22; CHECK: @[[PERCENT_S:[a-zA-Z0-9_$"\\.-]+]] = constant [4 x i8] c"%s\0A\00" 23; CHECK: @[[FORMAT_STR:[a-zA-Z0-9_$"\\.-]+]] = constant [3 x i8] c"%s\00" 24; CHECK: @[[CHARSTR:[a-zA-Z0-9_$"\\.-]+]] = constant [2 x i8] c"a\00" 25; CHECK: @[[EMPTY:[a-zA-Z0-9_$"\\.-]+]] = constant [1 x i8] zeroinitializer 26; CHECK: @[[STR:[a-zA-Z0-9_$"\\.-]+]] = private unnamed_addr constant [12 x i8] c"hello world\00", align 1 27;. 28define void @test_simplify1() { 29; CHECK-LABEL: @test_simplify1( 30; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 104) 31; CHECK-NEXT: ret void 32; 33 %fmt = getelementptr [2 x i8], [2 x i8]* @h, i32 0, i32 0 34 call void (i8*, ...) @printf(i8* %fmt) 35 ret void 36} 37 38define void @test_simplify2() { 39; CHECK-LABEL: @test_simplify2( 40; CHECK-NEXT: [[PUTS:%.*]] = call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @str, i32 0, i32 0)) 41; CHECK-NEXT: ret void 42; 43 %fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0 44 call void (i8*, ...) @printf(i8* %fmt) 45 ret void 46} 47 48define void @test_simplify6() { 49; CHECK-LABEL: @test_simplify6( 50; CHECK-NEXT: [[PUTS:%.*]] = call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0)) 51; CHECK-NEXT: ret void 52; 53 %fmt = getelementptr [4 x i8], [4 x i8]* @percent_s, i32 0, i32 0 54 %str = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0 55 call void (i8*, ...) @printf(i8* %fmt, i8* %str) 56 ret void 57} 58 59define void @test_simplify7() { 60; CHECK-LABEL: @test_simplify7( 61; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 97) 62; CHECK-NEXT: ret void 63; 64 %fmt = getelementptr [3 x i8], [3 x i8]* @format_str, i32 0, i32 0 65 %str = getelementptr [2 x i8], [2 x i8]* @charstr, i32 0, i32 0 66 call void (i8*, ...) @printf(i8* %fmt, i8* %str) 67 ret void 68} 69 70define void @test_simplify8() { 71; CHECK-LABEL: @test_simplify8( 72; CHECK-NEXT: call void (i8*, ...) @printf(i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @format_str, i32 0, i32 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @empty, i32 0, i32 0)) 73; CHECK-NEXT: ret void 74; 75 %fmt = getelementptr [3 x i8], [3 x i8]* @format_str, i32 0, i32 0 76 %str = getelementptr [1 x i8], [1 x i8]* @empty, i32 0, i32 0 77 call void (i8*, ...) @printf(i8* %fmt, i8* %str) 78 ret void 79} 80 81define void @test_simplify9() { 82; CHECK-LABEL: @test_simplify9( 83; CHECK-NEXT: call void (i8*, ...) @printf(i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @format_str, i32 0, i32 0), i8* getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0)) 84; CHECK-NEXT: ret void 85; 86 %fmt = getelementptr [3 x i8], [3 x i8]* @format_str, i32 0, i32 0 87 %str = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0 88 call void (i8*, ...) @printf(i8* %fmt, i8* %str) 89 ret void 90} 91 92define void @test_simplify10() { 93; CHECK-LABEL: @test_simplify10( 94; CHECK-NEXT: call void (i8*, ...) @printf(i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @format_str, i32 0, i32 0), i8* getelementptr inbounds ([1 x i8], [1 x i8]* @empty, i32 0, i32 0), i32 42, double 0x40091EB860000000) 95; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 97) 96; CHECK-NEXT: call void (i8*, ...) @printf(i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @format_str, i32 0, i32 0), i8* getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 42, double 0x40091EB860000000) 97; CHECK-NEXT: ret void 98; 99 %fmt = getelementptr [3 x i8], [3 x i8]* @format_str, i32 0, i32 0 100 %str1 = getelementptr [1 x i8], [1 x i8]* @empty, i32 0, i32 0 101 call void (i8*, ...) @printf(i8* %fmt, i8* %str1, i32 42, double 0x40091EB860000000) 102 %str2 = getelementptr [2 x i8], [2 x i8]* @charstr, i32 0, i32 0 103 call void (i8*, ...) @printf(i8* %fmt, i8* %str2, i32 42, double 0x40091EB860000000) 104 %str3 = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0 105 call void (i8*, ...) @printf(i8* %fmt, i8* %str3, i32 42, double 0x40091EB860000000) 106 ret void 107} 108;. 109; CHECK: attributes #[[ATTR0:[0-9]+]] = { nofree nounwind } 110;. 111