; Test that the sprintf library call simplifier works correctly.
;
; RUN: opt < %s -instcombine -S | FileCheck %s
-; RUN: opt < %s -mtriple xcore-xmos-elf -instcombine -S | FileCheck %s -check-prefix=CHECK-IPRINTF
+; RUN: opt < %s -mtriple xcore-xmos-elf -instcombine -S | FileCheck %s -check-prefixes=CHECK,CHECK-IPRINTF
+; RUN: opt < %s -mtriple=i386-pc-windows-msvc -instcombine -S | FileCheck %s --check-prefixes=CHECK,WIN
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"
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* nonnull align 1 dereferenceable(13) [[DST:%.*]], i8* nonnull align 1 dereferenceable(13) getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 13, i1 false)
; CHECK-NEXT: ret void
;
-; CHECK-IPRINTF-LABEL: @test_simplify1(
-; CHECK-IPRINTF-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* nonnull align 1 dereferenceable(13) [[DST:%.*]], i8* nonnull align 1 dereferenceable(13) getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 13, i1 false)
-; CHECK-IPRINTF-NEXT: ret void
-;
%fmt = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt)
ret void
; CHECK-NEXT: store i8 0, i8* [[DST:%.*]], align 1
; CHECK-NEXT: ret void
;
-; CHECK-IPRINTF-LABEL: @test_simplify2(
-; CHECK-IPRINTF-NEXT: store i8 0, i8* [[DST:%.*]], align 1
-; CHECK-IPRINTF-NEXT: ret void
-;
%fmt = getelementptr [1 x i8], [1 x i8]* @null, i32 0, i32 0
call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt)
ret void
; CHECK-NEXT: store i8 0, i8* [[DST:%.*]], align 1
; CHECK-NEXT: ret void
;
-; CHECK-IPRINTF-LABEL: @test_simplify3(
-; CHECK-IPRINTF-NEXT: store i8 0, i8* [[DST:%.*]], align 1
-; CHECK-IPRINTF-NEXT: ret void
-;
%fmt = getelementptr [7 x i8], [7 x i8]* @null_hello, i32 0, i32 0
call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt)
ret void
; CHECK-NEXT: store i8 0, i8* [[NUL]], align 1
; CHECK-NEXT: ret void
;
-; CHECK-IPRINTF-LABEL: @test_simplify4(
-; CHECK-IPRINTF-NEXT: store i8 104, i8* [[DST:%.*]], align 1
-; CHECK-IPRINTF-NEXT: [[NUL:%.*]] = getelementptr i8, i8* [[DST]], i32 1
-; CHECK-IPRINTF-NEXT: store i8 0, i8* [[NUL]], align 1
-; CHECK-IPRINTF-NEXT: ret void
-;
%fmt = getelementptr [3 x i8], [3 x i8]* @percent_c, i32 0, i32 0
call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8 104)
ret void
}
-; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1).
+; Check sprintf(dst, "%s", str) -> strcpy(dst, "%s", str) if result is unused.
define void @test_simplify5(i8* %dst, i8* %str) {
; CHECK-LABEL: @test_simplify5(
-; CHECK-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* nonnull dereferenceable(1) [[STR:%.*]])
-; CHECK-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1
-; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false)
+; CHECK-NEXT: [[STRCPY:%.*]] = call i8* @strcpy(i8* nonnull dereferenceable(1) [[DST:%.*]], i8* nonnull dereferenceable(1) [[STR:%.*]])
; CHECK-NEXT: ret void
;
-; CHECK-IPRINTF-LABEL: @test_simplify5(
-; CHECK-IPRINTF-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* nonnull dereferenceable(1) [[STR:%.*]])
-; CHECK-IPRINTF-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1
-; CHECK-IPRINTF-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false)
-; CHECK-IPRINTF-NEXT: ret void
-;
%fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0
call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str)
ret void
; Check sprintf(dst, format, ...) -> siprintf(str, format, ...) if no floating.
define void @test_simplify6(i8* %dst) {
-; CHECK-LABEL: @test_simplify6(
-; CHECK-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* nonnull dereferenceable(1) [[DST:%.*]], i8* nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187)
-; CHECK-NEXT: ret void
-;
; CHECK-IPRINTF-LABEL: @test_simplify6(
; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @siprintf(i8* [[DST:%.*]], i8* getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187)
; CHECK-IPRINTF-NEXT: ret void
;
+; WIN-LABEL: @test_simplify6(
+; WIN-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* nonnull dereferenceable(1) [[DST:%.*]], i8* nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @percent_d, i32 0, i32 0), i32 187)
+; WIN-NEXT: ret void
+;
%fmt = getelementptr [3 x i8], [3 x i8]* @percent_d, i32 0, i32 0
call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i32 187)
ret void
}
+; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1).
+
+define i32 @test_simplify7(i8* %dst, i8* %str) {
+; CHECK-IPRINTF-LABEL: @test_simplify7(
+; CHECK-IPRINTF-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* [[DST:%.*]], i8* [[STR:%.*]])
+; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[STPCPY]] to i32
+; CHECK-IPRINTF-NEXT: [[TMP2:%.*]] = ptrtoint i8* [[DST]] to i32
+; CHECK-IPRINTF-NEXT: [[TMP3:%.*]] = sub i32 [[TMP1]], [[TMP2]]
+; CHECK-IPRINTF-NEXT: ret i32 [[TMP3]]
+;
+; WIN-LABEL: @test_simplify7(
+; WIN-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* nonnull dereferenceable(1) [[STR:%.*]])
+; WIN-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1
+; WIN-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false)
+; WIN-NEXT: ret i32 [[STRLEN]]
+;
+ %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0
+ %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str)
+ ret i32 %r
+}
+
+; Check sprintf(dst, "%s", str) -> llvm.memcpy(dest, str, strlen(str) + 1, 1).
+define i32 @test_simplify8(i8* %dst) {
+; CHECK-LABEL: @test_simplify8(
+; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* nonnull align 1 dereferenceable(13) [[DST:%.*]], i8* nonnull align 1 dereferenceable(13) getelementptr inbounds ([13 x i8], [13 x i8]* @hello_world, i32 0, i32 0), i32 13, i1 false)
+; CHECK-NEXT: ret i32 12
+;
+ %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0
+ %str = getelementptr [13 x i8], [13 x i8]* @hello_world, i32 0, i32 0
+ %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str)
+ ret i32 %r
+}
+
+; Check sprintf(dst, "%s", str) -> stpcpy(dest, str) - dest
+
+define i32 @test_simplify9(i8* %dst, i8* %str) {
+; CHECK-IPRINTF-LABEL: @test_simplify9(
+; CHECK-IPRINTF-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* [[DST:%.*]], i8* [[STR:%.*]])
+; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[STPCPY]] to i32
+; CHECK-IPRINTF-NEXT: [[TMP2:%.*]] = ptrtoint i8* [[DST]] to i32
+; CHECK-IPRINTF-NEXT: [[TMP3:%.*]] = sub i32 [[TMP1]], [[TMP2]]
+; CHECK-IPRINTF-NEXT: ret i32 [[TMP3]]
+;
+; WIN-LABEL: @test_simplify9(
+; WIN-NEXT: [[STRLEN:%.*]] = call i32 @strlen(i8* nonnull dereferenceable(1) [[STR:%.*]])
+; WIN-NEXT: [[LENINC:%.*]] = add i32 [[STRLEN]], 1
+; WIN-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 [[DST:%.*]], i8* align 1 [[STR]], i32 [[LENINC]], i1 false)
+; WIN-NEXT: ret i32 [[STRLEN]]
+;
+ %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0
+ %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str)
+ ret i32 %r
+}
+
define void @test_no_simplify1(i8* %dst) {
; CHECK-LABEL: @test_no_simplify1(
; CHECK-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* nonnull dereferenceable(1) [[DST:%.*]], i8* nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00)
; CHECK-NEXT: ret void
;
-; CHECK-IPRINTF-LABEL: @test_no_simplify1(
-; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* nonnull dereferenceable(1) [[DST:%.*]], i8* nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @percent_f, i32 0, i32 0), double 1.870000e+00)
-; CHECK-IPRINTF-NEXT: ret void
-;
%fmt = getelementptr [3 x i8], [3 x i8]* @percent_f, i32 0, i32 0
call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, double 1.87)
ret void
; CHECK-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* nonnull dereferenceable(1) [[DST:%.*]], i8* nonnull dereferenceable(1) [[FMT:%.*]], double [[D:%.*]])
; CHECK-NEXT: ret void
;
-; CHECK-IPRINTF-LABEL: @test_no_simplify2(
-; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* nonnull dereferenceable(1) [[DST:%.*]], i8* nonnull dereferenceable(1) [[FMT:%.*]], double [[D:%.*]])
-; CHECK-IPRINTF-NEXT: ret void
-;
call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, double %d)
ret void
}
+
+define i32 @test_no_simplify3(i8* %dst, i8* %str) minsize {
+; CHECK-IPRINTF-LABEL: @test_no_simplify3(
+; CHECK-IPRINTF-NEXT: [[STPCPY:%.*]] = call i8* @stpcpy(i8* [[DST:%.*]], i8* [[STR:%.*]])
+; CHECK-IPRINTF-NEXT: [[TMP1:%.*]] = ptrtoint i8* [[STPCPY]] to i32
+; CHECK-IPRINTF-NEXT: [[TMP2:%.*]] = ptrtoint i8* [[DST]] to i32
+; CHECK-IPRINTF-NEXT: [[TMP3:%.*]] = sub i32 [[TMP1]], [[TMP2]]
+; CHECK-IPRINTF-NEXT: ret i32 [[TMP3]]
+;
+; WIN-LABEL: @test_no_simplify3(
+; WIN-NEXT: [[R:%.*]] = call i32 (i8*, i8*, ...) @sprintf(i8* nonnull dereferenceable(1) [[DST:%.*]], i8* nonnull dereferenceable(1) getelementptr inbounds ([3 x i8], [3 x i8]* @percent_s, i32 0, i32 0), i8* [[STR:%.*]])
+; WIN-NEXT: ret i32 [[R]]
+;
+ %fmt = getelementptr [3 x i8], [3 x i8]* @percent_s, i32 0, i32 0
+ %r = call i32 (i8*, i8*, ...) @sprintf(i8* %dst, i8* %fmt, i8* %str)
+ ret i32 %r
+}