1; Test that the fprintf library call simplifier works correctly.
2;
3; RUN: opt < %s -instcombine -S | FileCheck %s
4; RUN: opt < %s -mtriple xcore-xmos-elf -instcombine -S | FileCheck %s -check-prefix=CHECK-IPRINTF
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%FILE = type { }
9
10@hello_world = constant [13 x i8] c"hello world\0A\00"
11@percent_c = constant [3 x i8] c"%c\00"
12@percent_d = constant [3 x i8] c"%d\00"
13@percent_f = constant [3 x i8] c"%f\00"
14@percent_s = constant [3 x i8] c"%s\00"
15
16declare i32 @fprintf(%FILE*, i8*, ...)
17
18; Check fprintf(fp, "foo") -> fwrite("foo", 3, 1, fp).
19
20define void @test_simplify1(%FILE* %fp) {
21; CHECK-LABEL: @test_simplify1(
22  %fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
23  call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* %fmt)
24; CHECK-NEXT: call i32 @fwrite(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 12, i32 1, %FILE* %fp)
25  ret void
26; CHECK-NEXT: ret void
27}
28
29; Check fprintf(fp, "%c", chr) -> fputc(chr, fp).
30
31define void @test_simplify2(%FILE* %fp) {
32; CHECK-LABEL: @test_simplify2(
33  %fmt = getelementptr [3 x i8], [3 x i8]* @percent_c, i32 0, i32 0
34  call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* %fmt, i8 104)
35; CHECK-NEXT: call i32 @fputc(i32 104, %FILE* %fp)
36  ret void
37; CHECK-NEXT: ret void
38}
39
40; Check fprintf(fp, "%s", str) -> fputs(str, fp).
41; NOTE: The fputs simplifier simplifies this further to fwrite.
42
43define void @test_simplify3(%FILE* %fp) {
44; CHECK-LABEL: @test_simplify3(
45  %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0
46  %str = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
47  call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* %fmt, i8* %str)
48; CHECK-NEXT: call i32 @fwrite(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 12, i32 1, %FILE* %fp)
49  ret void
50; CHECK-NEXT: ret void
51}
52
53; Check fprintf(fp, fmt, ...) -> fiprintf(fp, fmt, ...) if no floating point.
54
55define void @test_simplify4(%FILE* %fp) {
56; CHECK-IPRINTF-LABEL: @test_simplify4(
57  %fmt = getelementptr [3 x i8], [3 x i8]* @percent_d, i32 0, i32 0
58  call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* %fmt, i32 187)
59; CHECK-IPRINTF-NEXT: call i32 (%FILE*, i8*, ...) @fiprintf(%FILE* %fp, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187)
60  ret void
61; CHECK-IPRINTF-NEXT: ret void
62}
63
64define void @test_simplify5(%FILE* %fp) {
65; CHECK-LABEL: @test_simplify5(
66  %fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
67  call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* %fmt) [ "deopt"() ]
68; CHECK-NEXT: call i32 @fwrite(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 12, i32 1, %FILE* %fp) [ "deopt"() ]
69  ret void
70; CHECK-NEXT: ret void
71}
72
73define void @test_no_simplify1(%FILE* %fp) {
74; CHECK-IPRINTF-LABEL: @test_no_simplify1(
75  %fmt = getelementptr [3 x i8], [3 x i8]* @percent_f, i32 0, i32 0
76  call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* %fmt, double 1.87)
77; CHECK-IPRINTF-NEXT: call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00)
78  ret void
79; CHECK-IPRINTF-NEXT: ret void
80}
81
82define void @test_no_simplify2(%FILE* %fp, double %d) {
83; CHECK-LABEL: @test_no_simplify2(
84  %fmt = getelementptr [3 x i8], [3 x i8]* @percent_f, i32 0, i32 0
85  call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* %fmt, double %d)
86; CHECK-NEXT: call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_f, i32 0, i32 0), double %d)
87  ret void
88; CHECK-NEXT: ret void
89}
90
91define i32 @test_no_simplify3(%FILE* %fp) {
92; CHECK-LABEL: @test_no_simplify3(
93  %fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
94  %1 = call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* %fmt)
95; CHECK-NEXT: call i32 (%FILE*, i8*, ...) @fprintf(%FILE* %fp, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0))
96  ret i32 %1
97; CHECK-NEXT: ret i32 %1
98}
99