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90 lines
3.5 KiB
LLVM
90 lines
3.5 KiB
LLVM
; Test that the fprintf library call simplifier works correctly.
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;
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; RUN: opt < %s -instcombine -S | FileCheck %s
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; RUN: opt < %s -mtriple xcore-xmos-elf -instcombine -S | FileCheck %s -check-prefix=CHECK-IPRINTF
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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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%FILE = type { }
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@hello_world = constant [13 x i8] c"hello world\0A\00"
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@percent_c = constant [3 x i8] c"%c\00"
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@percent_d = constant [3 x i8] c"%d\00"
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@percent_f = constant [3 x i8] c"%f\00"
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@percent_s = constant [3 x i8] c"%s\00"
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declare i32 @fprintf(%FILE*, i8*, ...)
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; Check fprintf(fp, "foo") -> fwrite("foo", 3, 1, fp).
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define void @test_simplify1(%FILE* %fp) {
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; CHECK-LABEL: @test_simplify1(
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%fmt = getelementptr [13 x i8]* @hello_world, i32 0, i32 0
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call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* %fmt)
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; CHECK-NEXT: call i32 @fwrite(i8* getelementptr inbounds ([13 x i8]* @hello_world, i32 0, i32 0), i32 12, i32 1, %FILE* %fp)
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ret void
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; CHECK-NEXT: ret void
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}
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; Check fprintf(fp, "%c", chr) -> fputc(chr, fp).
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define void @test_simplify2(%FILE* %fp) {
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; CHECK-LABEL: @test_simplify2(
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%fmt = getelementptr [3 x i8]* @percent_c, i32 0, i32 0
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call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* %fmt, i8 104)
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; CHECK-NEXT: call i32 @fputc(i32 104, %FILE* %fp)
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ret void
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; CHECK-NEXT: ret void
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}
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; Check fprintf(fp, "%s", str) -> fputs(str, fp).
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; NOTE: The fputs simplifier simplifies this further to fwrite.
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define void @test_simplify3(%FILE* %fp) {
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; CHECK-LABEL: @test_simplify3(
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%fmt = getelementptr [3 x i8]* @percent_s, i32 0, i32 0
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%str = getelementptr [13 x i8]* @hello_world, i32 0, i32 0
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call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* %fmt, i8* %str)
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; CHECK-NEXT: call i32 @fwrite(i8* getelementptr inbounds ([13 x i8]* @hello_world, i32 0, i32 0), i32 12, i32 1, %FILE* %fp)
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ret void
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; CHECK-NEXT: ret void
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}
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; Check fprintf(fp, fmt, ...) -> fiprintf(fp, fmt, ...) if no floating point.
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define void @test_simplify4(%FILE* %fp) {
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; CHECK-IPRINTF-LABEL: @test_simplify4(
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%fmt = getelementptr [3 x i8]* @percent_d, i32 0, i32 0
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call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* %fmt, i32 187)
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; CHECK-IPRINTF-NEXT: call i32 (%FILE*, i8*, ...)* @fiprintf(%FILE* %fp, i8* getelementptr inbounds ([3 x i8]* @percent_d, i32 0, i32 0), i32 187)
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ret void
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; CHECK-IPRINTF-NEXT: ret void
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}
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define void @test_no_simplify1(%FILE* %fp) {
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; CHECK-IPRINTF-LABEL: @test_no_simplify1(
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%fmt = getelementptr [3 x i8]* @percent_f, i32 0, i32 0
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call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* %fmt, double 1.87)
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; CHECK-IPRINTF-NEXT: call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* getelementptr inbounds ([3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00)
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ret void
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; CHECK-IPRINTF-NEXT: ret void
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}
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define void @test_no_simplify2(%FILE* %fp, double %d) {
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; CHECK-LABEL: @test_no_simplify2(
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%fmt = getelementptr [3 x i8]* @percent_f, i32 0, i32 0
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call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* %fmt, double %d)
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; CHECK-NEXT: call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* getelementptr inbounds ([3 x i8]* @percent_f, i32 0, i32 0), double %d)
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ret void
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; CHECK-NEXT: ret void
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}
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define i32 @test_no_simplify3(%FILE* %fp) {
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; CHECK-LABEL: @test_no_simplify3(
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%fmt = getelementptr [13 x i8]* @hello_world, i32 0, i32 0
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%1 = call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* %fmt)
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; CHECK-NEXT: call i32 (%FILE*, i8*, ...)* @fprintf(%FILE* %fp, i8* getelementptr inbounds ([13 x i8]* @hello_world, i32 0, i32 0))
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ret i32 %1
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; CHECK-NEXT: ret i32 %1
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}
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