1; Test that the fprintf library call simplifier works correctly. 2; 3; RUN: opt < %s -passes=instcombine -S | FileCheck %s 4; RUN: opt < %s -mtriple xcore-xmos-elf -passes=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@percent_m = constant [3 x i8] c"%m\00" 16 17declare i32 @fprintf(ptr, ptr, ...) 18 19; Check fprintf(fp, "foo") -> fwrite("foo", 3, 1, fp). 20 21define void @test_simplify1(ptr %fp) { 22; CHECK-LABEL: @test_simplify1( 23 call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr @hello_world) 24; CHECK-NEXT: call i32 @fwrite(ptr nonnull @hello_world, i32 12, i32 1, ptr %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(ptr %fp) { 32; CHECK-LABEL: @test_simplify2( 33 call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr @percent_c, i8 104) 34; CHECK-NEXT: call i32 @fputc(i32 104, ptr %fp) 35 ret void 36; CHECK-NEXT: ret void 37} 38 39; Check fprintf(fp, "%s", str) -> fputs(str, fp). 40; NOTE: The fputs simplifier simplifies this further to fwrite. 41 42define void @test_simplify3(ptr %fp) { 43; CHECK-LABEL: @test_simplify3( 44 call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr @percent_s, ptr @hello_world) 45; CHECK-NEXT: call i32 @fwrite(ptr nonnull @hello_world, i32 12, i32 1, ptr %fp) 46 ret void 47; CHECK-NEXT: ret void 48} 49 50; Check fprintf(fp, fmt, ...) -> fiprintf(fp, fmt, ...) if no floating point. 51 52define void @test_simplify4(ptr %fp) { 53; CHECK-IPRINTF-LABEL: @test_simplify4( 54 call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr @percent_d, i32 187) 55; CHECK-IPRINTF-NEXT: call i32 (ptr, ptr, ...) @fiprintf(ptr %fp, ptr nonnull @percent_d, i32 187) 56 ret void 57; CHECK-IPRINTF-NEXT: ret void 58} 59 60define void @test_simplify5(ptr %fp) { 61; CHECK-LABEL: @test_simplify5( 62 call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr @hello_world) [ "deopt"() ] 63; CHECK-NEXT: call i32 @fwrite(ptr nonnull @hello_world, i32 12, i32 1, ptr %fp) [ "deopt"() ] 64 ret void 65; CHECK-NEXT: ret void 66} 67 68define void @test_no_simplify1(ptr %fp) { 69; CHECK-IPRINTF-LABEL: @test_no_simplify1( 70 call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr @percent_f, double 1.87) 71; CHECK-IPRINTF-NEXT: call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr nonnull @percent_f, double 1.870000e+00) 72 ret void 73; CHECK-IPRINTF-NEXT: ret void 74} 75 76define void @test_no_simplify2(ptr %fp, double %d) { 77; CHECK-LABEL: @test_no_simplify2( 78 call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr @percent_f, double %d) 79; CHECK-NEXT: call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr nonnull @percent_f, double %d) 80 ret void 81; CHECK-NEXT: ret void 82} 83 84define i32 @test_no_simplify3(ptr %fp) { 85; CHECK-LABEL: @test_no_simplify3( 86 %1 = call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr @hello_world) 87; CHECK-NEXT: call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr nonnull @hello_world) 88 ret i32 %1 89; CHECK-NEXT: ret i32 %1 90} 91 92; Verify that a call with a format string containing just the %m directive 93; and no arguments is not simplified. 94 95define void @test_no_simplify4(ptr %fp) { 96; CHECK-LABEL: @test_no_simplify4( 97 call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr @percent_m) 98; CHECK-NEXT: call i32 (ptr, ptr, ...) @fprintf(ptr %fp, ptr nonnull @percent_m) 99 ret void 100; CHECK-NEXT: ret void 101} 102