1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; Test that the sprintf library call simplifier works correctly. 3; 4; RUN: opt < %s -passes=instcombine -S | FileCheck %s 5; RUN: opt < %s -mtriple xcore-xmos-elf -passes=instcombine -S | FileCheck %s -check-prefixes=CHECK,CHECK-IPRINTF,WITHSTPCPY 6; RUN: opt < %s -mtriple=i386-pc-windows-msvc -passes=instcombine -S | FileCheck %s --check-prefixes=CHECK,WIN 7; RUN: opt < %s -mtriple=i386-mingw32 -passes=instcombine -S | FileCheck %s --check-prefixes=CHECK,WIN,NOSTPCPY 8; RUN: opt < %s -mtriple=armv7-none-linux-android16 -passes=instcombine -S | FileCheck %s --check-prefixes=CHECK,NOSTPCPY 9; RUN: opt < %s -mtriple=armv7-none-linux-android21 -passes=instcombine -S | FileCheck %s --check-prefixes=CHECK,WITHSTPCPY 10; RUN: opt < %s -mtriple=x86_64-scei-ps4 -passes=instcombine -S | FileCheck %s --check-prefixes=CHECK,NOSTPCPY 11 12target 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" 13 14@hello_world = constant [13 x i8] c"hello world\0A\00" 15@null = constant [1 x i8] zeroinitializer 16@null_hello = constant [7 x i8] c"\00hello\00" 17@h = constant [2 x i8] c"h\00" 18@percent_c = constant [3 x i8] c"%c\00" 19@percent_d = constant [3 x i8] c"%d\00" 20@percent_f = constant [3 x i8] c"%f\00" 21@percent_s = constant [3 x i8] c"%s\00" 22 23declare i32 @sprintf(i8*, i8*, ...) 24 25; Check sprintf(dst, fmt) -> llvm.memcpy(str, fmt, strlen(fmt) + 1, 1). 26 27define void @test_simplify1(i8* %dst) { 28; CHECK-LABEL: @test_simplify1( 29; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* noundef nonnull align 1 dereferenceable(13) [[DST:%.*]], i8* noundef nonnull align 1 dereferenceable(13) getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 13, i1 false) 30; CHECK-NEXT: ret void 31; 32 %fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0 33 call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt) 34 ret void 35} 36 37define void @test_simplify2(i8* %dst) { 38; CHECK-LABEL: @test_simplify2( 39; CHECK-NEXT: store i8 0, i8* [[DST:%.*]], align 1 40; CHECK-NEXT: ret void 41; 42 %fmt = getelementptr [1 x i8], [1 x i8]* @null, i32 0, i32 0 43 call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt) 44 ret void 45} 46 47define void @test_simplify3(i8* %dst) { 48; CHECK-LABEL: @test_simplify3( 49; CHECK-NEXT: store i8 0, i8* [[DST:%.*]], align 1 50; CHECK-NEXT: ret void 51; 52 %fmt = getelementptr [7 x i8], [7 x i8]* @null_hello, i32 0, i32 0 53 call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt) 54 ret void 55} 56 57; Check sprintf(dst, "%c", chr) -> *(i8*)dst = chr; *((i8*)dst + 1) = 0. 58 59define void @test_simplify4(i8* %dst) { 60; CHECK-LABEL: @test_simplify4( 61; CHECK-NEXT: store i8 104, i8* [[DST:%.*]], align 1 62; CHECK-NEXT: [[NUL:%.*]] = getelementptr inbounds i8, i8* [[DST]], i32 1 63; CHECK-NEXT: store i8 0, i8* [[NUL]], align 1 64; CHECK-NEXT: ret void 65; 66 %fmt = getelementptr [3 x i8], [3 x i8]* @percent_c, i32 0, i32 0 67 call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8 104) 68 ret void 69} 70 71; Check sprintf(dst, "%s", str) -> strcpy(dst, "%s", str) if result is unused. 72 73define void @test_simplify5(i8* %dst, i8* %str) { 74; CHECK-LABEL: @test_simplify5( 75; CHECK-NEXT: [[STRCPY:%.*]] = call i8* @strcpy(i8* noundef nonnull dereferenceable(1) [[DST:%.*]], i8* noundef nonnull dereferenceable(1) [[STR:%.*]]) 76; CHECK-NEXT: ret void 77; 78 %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 79 call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) 80 ret void 81} 82 83; Check sprintf(dst, format, ...) -> siprintf(str, format, ...) if no floating. 84 85define void @test_simplify6(i8* %dst) { 86; CHECK-IPRINTF-LABEL: @test_simplify6( 87; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @siprintf(i8* [[DST:%.*]], i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187) 88; CHECK-IPRINTF-NEXT: ret void 89; 90; WIN-LABEL: @test_simplify6( 91; WIN-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* noundef nonnull dereferenceable(1) [[DST:%.*]], i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187) 92; WIN-NEXT: ret void 93; 94 %fmt = getelementptr [3 x i8], [3 x i8]* @percent_d, i32 0, i32 0 95 call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i32 187) 96 ret void 97} 98 99; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1). 100 101define i32 @test_simplify7(i8* %dst, i8* %str) { 102; WITHSTPCPY-LABEL: @test_simplify7( 103; WITHSTPCPY-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* [[DST:%.*]], i8* [[STR:%.*]]) 104; WITHSTPCPY-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[STPCPY]] to i32 105; WITHSTPCPY-NEXT: [[TMP2:%.*]] = ptrtoint i8* [[DST]] to i32 106; WITHSTPCPY-NEXT: [[TMP3:%.*]] = sub i32 [[TMP1]], [[TMP2]] 107; WITHSTPCPY-NEXT: ret i32 [[TMP3]] 108; 109; NOSTPCPY-LABEL: @test_simplify7( 110; NOSTPCPY-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* noundef nonnull dereferenceable(1) [[STR:%.*]]) 111; NOSTPCPY-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1 112; NOSTPCPY-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false) 113; NOSTPCPY-NEXT: ret i32 [[STRLEN]] 114; 115 %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 116 %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) 117 ret i32 %r 118} 119 120; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1). 121define i32 @test_simplify8(i8* %dst) { 122; CHECK-LABEL: @test_simplify8( 123; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* noundef nonnull align 1 dereferenceable(13) [[DST:%.*]], i8* noundef nonnull align 1 dereferenceable(13) getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 13, i1 false) 124; CHECK-NEXT: ret i32 12 125; 126 %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 127 %str = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0 128 %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) 129 ret i32 %r 130} 131 132; Check sprintf(dst, "%s", str) -> stpcpy(dest, str) - dest 133 134define i32 @test_simplify9(i8* %dst, i8* %str) { 135; CHECK-IPRINTF-LABEL: @test_simplify9( 136; CHECK-IPRINTF-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* [[DST:%.*]], i8* [[STR:%.*]]) 137; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[STPCPY]] to i32 138; CHECK-IPRINTF-NEXT: [[TMP2:%.*]] = ptrtoint i8* [[DST]] to i32 139; CHECK-IPRINTF-NEXT: [[TMP3:%.*]] = sub i32 [[TMP1]], [[TMP2]] 140; CHECK-IPRINTF-NEXT: ret i32 [[TMP3]] 141; 142; WIN-LABEL: @test_simplify9( 143; WIN-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* noundef nonnull dereferenceable(1) [[STR:%.*]]) 144; WIN-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1 145; WIN-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false) 146; WIN-NEXT: ret i32 [[STRLEN]] 147; 148 %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 149 %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) 150 ret i32 %r 151} 152 153define void @test_no_simplify1(i8* %dst) { 154; CHECK-LABEL: @test_no_simplify1( 155; CHECK-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* noundef nonnull dereferenceable(1) [[DST:%.*]], i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00) 156; CHECK-NEXT: ret void 157; 158 %fmt = getelementptr [3 x i8], [3 x i8]* @percent_f, i32 0, i32 0 159 call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, double 1.87) 160 ret void 161} 162 163define void @test_no_simplify2(i8* %dst, i8* %fmt, double %d) { 164; CHECK-LABEL: @test_no_simplify2( 165; CHECK-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* noundef nonnull dereferenceable(1) [[DST:%.*]], i8* noundef nonnull dereferenceable(1) [[FMT:%.*]], double [[D:%.*]]) 166; CHECK-NEXT: ret void 167; 168 call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, double %d) 169 ret void 170} 171 172define i32 @test_no_simplify3(i8* %dst, i8* %str) minsize { 173; CHECK-IPRINTF-LABEL: @test_no_simplify3( 174; CHECK-IPRINTF-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* [[DST:%.*]], i8* [[STR:%.*]]) 175; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[STPCPY]] to i32 176; CHECK-IPRINTF-NEXT: [[TMP2:%.*]] = ptrtoint i8* [[DST]] to i32 177; CHECK-IPRINTF-NEXT: [[TMP3:%.*]] = sub i32 [[TMP1]], [[TMP2]] 178; CHECK-IPRINTF-NEXT: ret i32 [[TMP3]] 179; 180; WIN-LABEL: @test_no_simplify3( 181; WIN-NEXT: [[R:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* noundef nonnull dereferenceable(1) [[DST:%.*]], i8* noundef nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @percent_s, i32 0, i32 0), i8* [[STR:%.*]]) 182; WIN-NEXT: ret i32 [[R]] 183; 184 %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 185 %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) 186 ret i32 %r 187} 188