119 lines
4.6 KiB
LLVM
119 lines
4.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
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; Test that the printf library call simplifier works correctly.
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;
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; RUN: opt < %s -instcombine -S | FileCheck %s
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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"
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@hello_world = constant [13 x i8] c"hello world\0A\00"
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@h = constant [2 x i8] c"h\00"
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@percent_s = constant [4 x i8] c"%s\0A\00"
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@format_str = constant [3 x i8] c"%s\00"
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@charstr = constant [2 x i8] c"a\00"
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@empty = constant [1 x i8] c"\00"
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declare void @printf(i8*, ...)
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; Check simplification of printf with void return type.
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;.
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; CHECK: @[[HELLO_WORLD:[a-zA-Z0-9_$"\\.-]+]] = constant [13 x i8] c"hello world\0A\00"
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; CHECK: @[[H:[a-zA-Z0-9_$"\\.-]+]] = constant [2 x i8] c"h\00"
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; CHECK: @[[PERCENT_S:[a-zA-Z0-9_$"\\.-]+]] = constant [4 x i8] c"%s\0A\00"
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; CHECK: @[[FORMAT_STR:[a-zA-Z0-9_$"\\.-]+]] = constant [3 x i8] c"%s\00"
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; CHECK: @[[CHARSTR:[a-zA-Z0-9_$"\\.-]+]] = constant [2 x i8] c"a\00"
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; CHECK: @[[EMPTY:[a-zA-Z0-9_$"\\.-]+]] = constant [1 x i8] zeroinitializer
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; CHECK: @[[STR:[a-zA-Z0-9_$"\\.-]+]] = private unnamed_addr constant [12 x i8] c"hello world\00", align 1
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; CHECK: @[[STR_1:[a-zA-Z0-9_$"\\.-]+]] = private unnamed_addr constant [12 x i8] c"hello world\00", align 1
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; CHECK: @[[STR_2:[a-zA-Z0-9_$"\\.-]+]] = private unnamed_addr constant [12 x i8] c"hello world\00", align 1
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;.
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define void @test_simplify1() {
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; CHECK-LABEL: @test_simplify1(
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; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 104)
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; CHECK-NEXT: ret void
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;
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%fmt = getelementptr [2 x i8], [2 x i8]* @h, i32 0, i32 0
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call void (i8*, ...) @printf(i8* %fmt)
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ret void
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}
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define void @test_simplify2() {
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; CHECK-LABEL: @test_simplify2(
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; CHECK-NEXT: [[PUTS:%.*]] = call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @str, i32 0, i32 0))
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; CHECK-NEXT: ret void
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;
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%fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
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call void (i8*, ...) @printf(i8* %fmt)
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ret void
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}
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define void @test_simplify6() {
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; CHECK-LABEL: @test_simplify6(
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; CHECK-NEXT: [[PUTS:%.*]] = call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0))
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; CHECK-NEXT: ret void
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;
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%fmt = getelementptr [4 x i8], [4 x i8]* @percent_s, i32 0, i32 0
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%str = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
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call void (i8*, ...) @printf(i8* %fmt, i8* %str)
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ret void
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}
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define void @test_simplify7() {
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; CHECK-LABEL: @test_simplify7(
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; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 97)
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; CHECK-NEXT: ret void
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;
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%fmt = getelementptr [3 x i8], [3 x i8]* @format_str, i32 0, i32 0
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%str = getelementptr [2 x i8], [2 x i8]* @charstr, i32 0, i32 0
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call void (i8*, ...) @printf(i8* %fmt, i8* %str)
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ret void
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}
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; printf("%s", "") --> noop
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define void @test_simplify8() {
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; CHECK-LABEL: @test_simplify8(
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; CHECK-NEXT: ret void
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;
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%fmt = getelementptr [3 x i8], [3 x i8]* @format_str, i32 0, i32 0
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%str = getelementptr [1 x i8], [1 x i8]* @empty, i32 0, i32 0
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call void (i8*, ...) @printf(i8* %fmt, i8* %str)
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ret void
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}
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; printf("%s", str"\n") --> puts(str)
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define void @test_simplify9() {
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; CHECK-LABEL: @test_simplify9(
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; CHECK-NEXT: [[PUTS:%.*]] = call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @str.1, i32 0, i32 0))
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; CHECK-NEXT: ret void
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;
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%fmt = getelementptr [3 x i8], [3 x i8]* @format_str, i32 0, i32 0
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%str = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
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call void (i8*, ...) @printf(i8* %fmt, i8* %str)
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ret void
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}
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; printf("%s", "", ...) --> noop
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; printf("%s", "a", ...) --> putchar('a')
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; printf("%s", str"\n", ...) --> puts(str)
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define void @test_simplify10() {
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; CHECK-LABEL: @test_simplify10(
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; CHECK-NEXT: [[PUTCHAR:%.*]] = call i32 @putchar(i32 97)
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; CHECK-NEXT: [[PUTS:%.*]] = call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @str.2, i32 0, i32 0))
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; CHECK-NEXT: ret void
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;
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%fmt = getelementptr [3 x i8], [3 x i8]* @format_str, i32 0, i32 0
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%str1 = getelementptr [1 x i8], [1 x i8]* @empty, i32 0, i32 0
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call void (i8*, ...) @printf(i8* %fmt, i8* %str1, i32 42, double 0x40091EB860000000)
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%str2 = getelementptr [2 x i8], [2 x i8]* @charstr, i32 0, i32 0
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call void (i8*, ...) @printf(i8* %fmt, i8* %str2, i32 42, double 0x40091EB860000000)
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%str3 = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
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call void (i8*, ...) @printf(i8* %fmt, i8* %str3, i32 42, double 0x40091EB860000000)
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ret void
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}
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;.
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; CHECK: attributes #[[ATTR0:[0-9]+]] = { nofree nounwind }
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;.
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