| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; Test that the sprintf library call simplifier works correctly. |
| ; |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| ; RUN: opt < %s -mtriple xcore-xmos-elf -instcombine -S | FileCheck %s -check-prefixes=CHECK,CHECK-IPRINTF,WITHSTPCPY |
| ; RUN: opt < %s -mtriple=i386-pc-windows-msvc -instcombine -S | FileCheck %s --check-prefixes=CHECK,WIN |
| ; RUN: opt < %s -mtriple=i386-mingw32 -instcombine -S | FileCheck %s --check-prefixes=CHECK,WIN,NOSTPCPY |
| ; RUN: opt < %s -mtriple=armv7-none-linux-android16 -instcombine -S | FileCheck %s --check-prefixes=CHECK,NOSTPCPY |
| ; RUN: opt < %s -mtriple=armv7-none-linux-android21 -instcombine -S | FileCheck %s --check-prefixes=CHECK,WITHSTPCPY |
| ; RUN: opt < %s -mtriple=x86_64-scei-ps4 -instcombine -S | FileCheck %s --check-prefixes=CHECK,NOSTPCPY |
| |
| target 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" |
| |
| @hello_world = constant [13 x i8] c"hello world\0A\00" |
| @null = constant [1 x i8] zeroinitializer |
| @null_hello = constant [7 x i8] c"\00hello\00" |
| @h = constant [2 x i8] c"h\00" |
| @percent_c = constant [3 x i8] c"%c\00" |
| @percent_d = constant [3 x i8] c"%d\00" |
| @percent_f = constant [3 x i8] c"%f\00" |
| @percent_s = constant [3 x i8] c"%s\00" |
| |
| declare i32 @sprintf(i8*, i8*, ...) |
| |
| ; Check sprintf(dst, fmt) -> llvm.memcpy(str, fmt, strlen(fmt) + 1, 1). |
| |
| define void @test_simplify1(i8* %dst) { |
| ; CHECK-LABEL: @test_simplify1( |
| ; 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) |
| ; CHECK-NEXT: ret void |
| ; |
| %fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0 |
| call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt) |
| ret void |
| } |
| |
| define void @test_simplify2(i8* %dst) { |
| ; CHECK-LABEL: @test_simplify2( |
| ; CHECK-NEXT: store i8 0, i8* [[DST:%.*]], align 1 |
| ; CHECK-NEXT: ret void |
| ; |
| %fmt = getelementptr [1 x i8], [1 x i8]* @null, i32 0, i32 0 |
| call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt) |
| ret void |
| } |
| |
| define void @test_simplify3(i8* %dst) { |
| ; CHECK-LABEL: @test_simplify3( |
| ; CHECK-NEXT: store i8 0, i8* [[DST:%.*]], align 1 |
| ; CHECK-NEXT: ret void |
| ; |
| %fmt = getelementptr [7 x i8], [7 x i8]* @null_hello, i32 0, i32 0 |
| call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt) |
| ret void |
| } |
| |
| ; Check sprintf(dst, "%c", chr) -> *(i8*)dst = chr; *((i8*)dst + 1) = 0. |
| |
| define void @test_simplify4(i8* %dst) { |
| ; CHECK-LABEL: @test_simplify4( |
| ; CHECK-NEXT: store i8 104, i8* [[DST:%.*]], align 1 |
| ; CHECK-NEXT: [[NUL:%.*]] = getelementptr i8, i8* [[DST]], i32 1 |
| ; CHECK-NEXT: store i8 0, i8* [[NUL]], align 1 |
| ; CHECK-NEXT: ret void |
| ; |
| %fmt = getelementptr [3 x i8], [3 x i8]* @percent_c, i32 0, i32 0 |
| call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8 104) |
| ret void |
| } |
| |
| ; Check sprintf(dst, "%s", str) -> strcpy(dst, "%s", str) if result is unused. |
| |
| define void @test_simplify5(i8* %dst, i8* %str) { |
| ; CHECK-LABEL: @test_simplify5( |
| ; CHECK-NEXT: [[STRCPY:%.*]] = call i8* @strcpy(i8* noundef nonnull dereferenceable(1) [[DST:%.*]], i8* noundef nonnull dereferenceable(1) [[STR:%.*]]) |
| ; CHECK-NEXT: ret void |
| ; |
| %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 |
| call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) |
| ret void |
| } |
| |
| ; Check sprintf(dst, format, ...) -> siprintf(str, format, ...) if no floating. |
| |
| define void @test_simplify6(i8* %dst) { |
| ; CHECK-IPRINTF-LABEL: @test_simplify6( |
| ; 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) |
| ; CHECK-IPRINTF-NEXT: ret void |
| ; |
| ; WIN-LABEL: @test_simplify6( |
| ; 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) |
| ; WIN-NEXT: ret void |
| ; |
| %fmt = getelementptr [3 x i8], [3 x i8]* @percent_d, i32 0, i32 0 |
| call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i32 187) |
| ret void |
| } |
| |
| ; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1). |
| |
| define i32 @test_simplify7(i8* %dst, i8* %str) { |
| ; WITHSTPCPY-LABEL: @test_simplify7( |
| ; WITHSTPCPY-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* [[DST:%.*]], i8* [[STR:%.*]]) |
| ; WITHSTPCPY-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[STPCPY]] to i32 |
| ; WITHSTPCPY-NEXT: [[TMP2:%.*]] = ptrtoint i8* [[DST]] to i32 |
| ; WITHSTPCPY-NEXT: [[TMP3:%.*]] = sub i32 [[TMP1]], [[TMP2]] |
| ; WITHSTPCPY-NEXT: ret i32 [[TMP3]] |
| ; |
| ; NOSTPCPY-LABEL: @test_simplify7( |
| ; NOSTPCPY-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* noundef nonnull dereferenceable(1) [[STR:%.*]]) |
| ; NOSTPCPY-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1 |
| ; NOSTPCPY-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false) |
| ; NOSTPCPY-NEXT: ret i32 [[STRLEN]] |
| ; |
| %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 |
| %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) |
| ret i32 %r |
| } |
| |
| ; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1). |
| define i32 @test_simplify8(i8* %dst) { |
| ; CHECK-LABEL: @test_simplify8( |
| ; 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) |
| ; CHECK-NEXT: ret i32 12 |
| ; |
| %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 |
| %str = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0 |
| %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) |
| ret i32 %r |
| } |
| |
| ; Check sprintf(dst, "%s", str) -> stpcpy(dest, str) - dest |
| |
| define i32 @test_simplify9(i8* %dst, i8* %str) { |
| ; CHECK-IPRINTF-LABEL: @test_simplify9( |
| ; CHECK-IPRINTF-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* [[DST:%.*]], i8* [[STR:%.*]]) |
| ; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[STPCPY]] to i32 |
| ; CHECK-IPRINTF-NEXT: [[TMP2:%.*]] = ptrtoint i8* [[DST]] to i32 |
| ; CHECK-IPRINTF-NEXT: [[TMP3:%.*]] = sub i32 [[TMP1]], [[TMP2]] |
| ; CHECK-IPRINTF-NEXT: ret i32 [[TMP3]] |
| ; |
| ; WIN-LABEL: @test_simplify9( |
| ; WIN-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* noundef nonnull dereferenceable(1) [[STR:%.*]]) |
| ; WIN-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1 |
| ; WIN-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false) |
| ; WIN-NEXT: ret i32 [[STRLEN]] |
| ; |
| %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 |
| %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) |
| ret i32 %r |
| } |
| |
| define void @test_no_simplify1(i8* %dst) { |
| ; CHECK-LABEL: @test_no_simplify1( |
| ; 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) |
| ; CHECK-NEXT: ret void |
| ; |
| %fmt = getelementptr [3 x i8], [3 x i8]* @percent_f, i32 0, i32 0 |
| call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, double 1.87) |
| ret void |
| } |
| |
| define void @test_no_simplify2(i8* %dst, i8* %fmt, double %d) { |
| ; CHECK-LABEL: @test_no_simplify2( |
| ; CHECK-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* noundef nonnull dereferenceable(1) [[DST:%.*]], i8* noundef nonnull dereferenceable(1) [[FMT:%.*]], double [[D:%.*]]) |
| ; CHECK-NEXT: ret void |
| ; |
| call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, double %d) |
| ret void |
| } |
| |
| define i32 @test_no_simplify3(i8* %dst, i8* %str) minsize { |
| ; CHECK-IPRINTF-LABEL: @test_no_simplify3( |
| ; CHECK-IPRINTF-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* [[DST:%.*]], i8* [[STR:%.*]]) |
| ; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[STPCPY]] to i32 |
| ; CHECK-IPRINTF-NEXT: [[TMP2:%.*]] = ptrtoint i8* [[DST]] to i32 |
| ; CHECK-IPRINTF-NEXT: [[TMP3:%.*]] = sub i32 [[TMP1]], [[TMP2]] |
| ; CHECK-IPRINTF-NEXT: ret i32 [[TMP3]] |
| ; |
| ; WIN-LABEL: @test_no_simplify3( |
| ; 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:%.*]]) |
| ; WIN-NEXT: ret i32 [[R]] |
| ; |
| %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0 |
| %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str) |
| ret i32 %r |
| } |