1 ; Test that the fprintf library call simplifier works correctly.
3 ; RUN: opt < %s -instcombine -S | FileCheck %s
4 ; RUN: opt < %s -mtriple xcore-xmos-elf -instcombine -S | FileCheck %s -check-prefix=CHECK-IPRINTF
6 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"
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"
16 declare i32 @fprintf(%FILE*, i8*, ...)
18 ; Check fprintf(fp, "foo") -> fwrite("foo", 3, 1, fp).
20 define 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)
26 ; CHECK-NEXT: ret void
29 ; Check fprintf(fp, "%c", chr) -> fputc(chr, fp).
31 define 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)
37 ; CHECK-NEXT: ret void
40 ; Check fprintf(fp, "%s", str) -> fputs(str, fp).
41 ; NOTE: The fputs simplifier simplifies this further to fwrite.
43 define 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)
50 ; CHECK-NEXT: ret void
53 ; Check fprintf(fp, fmt, ...) -> fiprintf(fp, fmt, ...) if no floating point.
55 define 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)
61 ; CHECK-IPRINTF-NEXT: ret void
64 define 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"() ]
70 ; CHECK-NEXT: ret void
73 define 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)
79 ; CHECK-IPRINTF-NEXT: ret void
82 define 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)
88 ; CHECK-NEXT: ret void
91 define 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))
97 ; CHECK-NEXT: ret i32 %1