1 ; Test that the printf library call simplifier works correctly.
3 ; RUN: opt < %s -instcombine -S | FileCheck %s
5 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"
7 @hello_world = constant [13 x i8] c"hello world\0A\00"
8 @h = constant [2 x i8] c"h\00"
9 @percent_s = constant [4 x i8] c"%s\0A\00"
10 @format_str = constant [3 x i8] c"%s\00"
11 @charstr = constant [2 x i8] c"a\00"
13 declare void @printf(i8*, ...)
15 ; Check simplification of printf with void return type.
17 define void @test_simplify1() {
18 ; CHECK-LABEL: @test_simplify1(
19 %fmt = getelementptr [2 x i8], [2 x i8]* @h, i32 0, i32 0
20 call void (i8*, ...) @printf(i8* %fmt)
21 ; CHECK-NEXT: call i32 @putchar(i32 104)
23 ; CHECK-NEXT: ret void
26 define void @test_simplify2() {
27 ; CHECK-LABEL: @test_simplify2(
28 %fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
29 call void (i8*, ...) @printf(i8* %fmt)
30 ; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @str, i32 0, i32 0))
32 ; CHECK-NEXT: ret void
35 define void @test_simplify6() {
36 ; CHECK-LABEL: @test_simplify6(
37 %fmt = getelementptr [4 x i8], [4 x i8]* @percent_s, i32 0, i32 0
38 %str = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
39 call void (i8*, ...) @printf(i8* %fmt, i8* %str)
40 ; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0))
42 ; CHECK-NEXT: ret void
45 define void @test_simplify7() {
46 ; CHECK-LABEL: @test_simplify7(
47 %fmt = getelementptr [3 x i8], [3 x i8]* @format_str, i32 0, i32 0
48 %str = getelementptr [2 x i8], [2 x i8]* @charstr, i32 0, i32 0
49 call void (i8*, ...) @printf(i8* %fmt, i8* %str)
50 ; CHECK-NEXT: call i32 @putchar(i32 97)
52 ; CHECK-NEXT: ret void