53 lines
1.3 KiB
LLVM
53 lines
1.3 KiB
LLVM
; Test that the fwrite library call simplifier works correctly.
|
|
;
|
|
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
|
|
|
|
target datalayout = "e-p:64:64:64"
|
|
|
|
%FILE = type { }
|
|
|
|
@str = constant [1 x i8] zeroinitializer
|
|
@empty = constant [0 x i8] zeroinitializer
|
|
|
|
declare i64 @fwrite(ptr, i64, i64, ptr)
|
|
|
|
; Check fwrite(S, 1, 1, fp) -> fputc(S[0], fp).
|
|
|
|
define void @test_simplify1(ptr %fp) {
|
|
; CHECK-LABEL: @test_simplify1(
|
|
call i64 @fwrite(ptr @str, i64 1, i64 1, ptr %fp)
|
|
; CHECK-NEXT: call i32 @fputc(i32 0, ptr %fp)
|
|
ret void
|
|
; CHECK-NEXT: ret void
|
|
}
|
|
|
|
define void @test_simplify2(ptr %fp) {
|
|
; CHECK-LABEL: @test_simplify2(
|
|
call i64 @fwrite(ptr @empty, i64 1, i64 0, ptr %fp)
|
|
ret void
|
|
; CHECK-NEXT: ret void
|
|
}
|
|
|
|
define void @test_simplify3(ptr %fp) {
|
|
; CHECK-LABEL: @test_simplify3(
|
|
call i64 @fwrite(ptr @empty, i64 0, i64 1, ptr %fp)
|
|
ret void
|
|
; CHECK-NEXT: ret void
|
|
}
|
|
|
|
define i64 @test_no_simplify1(ptr %fp) {
|
|
; CHECK-LABEL: @test_no_simplify1(
|
|
%ret = call i64 @fwrite(ptr @str, i64 1, i64 1, ptr %fp)
|
|
; CHECK-NEXT: call i64 @fwrite
|
|
ret i64 %ret
|
|
; CHECK-NEXT: ret i64 %ret
|
|
}
|
|
|
|
define void @test_no_simplify2(ptr %fp, i64 %size) {
|
|
; CHECK-LABEL: @test_no_simplify2(
|
|
call i64 @fwrite(ptr @str, i64 %size, i64 1, ptr %fp)
|
|
; CHECK-NEXT: call i64 @fwrite
|
|
ret void
|
|
; CHECK-NEXT: ret void
|
|
}
|