1 ; Test that the printf library call simplifier works correctly. 2 ; 3 ; RUN: opt < %s -instcombine -S | FileCheck %s 4 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" 6 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 11 declare void @printf(i8*, ...) 12 13 ; Check simplification of printf with void return type. 14 15 define void @test_simplify1() { 16 ; CHECK-LABEL: @test_simplify1( 17 %fmt = getelementptr [2 x i8]* @h, i32 0, i32 0 18 call void (i8*, ...)* @printf(i8* %fmt) 19 ; CHECK-NEXT: call i32 @putchar(i32 104) 20 ret void 21 ; CHECK-NEXT: ret void 22 } 23 24 define void @test_simplify2() { 25 ; CHECK-LABEL: @test_simplify2( 26 %fmt = getelementptr [13 x i8]* @hello_world, i32 0, i32 0 27 call void (i8*, ...)* @printf(i8* %fmt) 28 ; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([12 x i8]* @str, i32 0, i32 0)) 29 ret void 30 ; CHECK-NEXT: ret void 31 } 32 33 define void @test_simplify6() { 34 ; CHECK-LABEL: @test_simplify6( 35 %fmt = getelementptr [4 x i8]* @percent_s, i32 0, i32 0 36 %str = getelementptr [13 x i8]* @hello_world, i32 0, i32 0 37 call void (i8*, ...)* @printf(i8* %fmt, i8* %str) 38 ; CHECK-NEXT: call i32 @puts(i8* getelementptr inbounds ([13 x i8]* @hello_world, i32 0, i32 0)) 39 ret void 40 ; CHECK-NEXT: ret void 41 } 42
